Lithuanian grammar is the study of rules governing the use of the Lithuanian language. Lithuanian grammar retains many archaic features from Proto-Indo European that have been lost in other Indo-European languages. It has extremely complex morphology; words have many different forms with subtle differences and nuances in usage.

Lithuanian language has these parts of speech:

1. Noun (Daiktavardis)
2. Adjective (Būdvardis)
3. Verb (Veiksmažodis)
4. Numeral (Skaitvardis)
5. Pronoun (Įvardis)
6. Adverb (Prieveiksmis)
7. Particle (Dalelytė)
8. Preposition (Prielinksnis)
9. Conjunction (Jungtukas)
10. Interjection (Jaustukas)
11. Verbal interjection (Ištiktukas)

Gender

Lithuanian language has four categories of gender:

• masculine gender
• feminine gender
• indefinite gender
• neuter gender

However only the first two can be called genders in the complete sense of this word. The indefinite gender is obtained by a pronoun kas - 'who? what?', by personal pronouns aš/mes - 'I'/'we', tu/jūs - 'you' and a reflexive pronoun savęs, as well as by few pejorative nouns. The indefinite gender doesn't have its proper inflections. So, the word kas uses masculine inflections, but the nouns of the indefinite gender have feminine inflections. The other pronouns have their own specific paradigm.

The neuter gender has very limited usage and a single grammatical form without declension. It's used to express the state or condition of surroundings, like 'It's cold' in English (the Lithuanian equivalent would be "Šalta", that's the neuter gender of a word šaltas - 'cold'). Adjectives (not every), passive participles and numerals (a part) have the neuter gender, but not nouns.

The masculine gender is also the indeterminate gender as in other Indo-European languages. Which means that if you have a mixed group of things named both in masculine and feminine genders, the masculine gender is used for the whole group. The masculine as the indeterminate gender differs from the indefinite gender, which allows treatment of the word in two ways.

Note that there are many nouns that use masculine or feminine genders without any reason of biological gender, for instance, words that denote inanimate things. The masculine or feminine usage of these words is stable (with few exceptions) and doesn't depend on the will of a speaker.

Grammatical number

The Lithuanian language has five categories of grammatical number:

• singular number
• plural number
• dual number
• indefinite number
• super-plural words (dauginiai žodžiai in Lithuanian)

But only the first three can be considered complete grammatical numbers, while the others are just auxiliary.

The singular number indicates that the denoted thing is one or indivisible (as in pienas - 'milk', smėlis - 'sand', meilė - 'love'). The plural number, when it can be in contrast with the singular, indicates that there are many of the things denoted by the word. But sometimes, when a word doesn't have the singular number, being a plurale tantum noun, the plural form doesn't indicate real singularity or plurality of the denoted object(s).

Adjectives and numerals also have the singular - plural distinction. Their number depends on that of the noun they are attributed to.

The dual number indicates a pair of things. Historically, the dual number has been a full grammatical number, participating as the third element in singular - dual - plural distinction. During the last century, the dual was used more or less sporadically in Lithuanian, sometimes reaching the status of a full number for agreement purposes, meaning the dual of noun required dual agreement in its adjectives or the dual of the subject required the dual of the verb. But in many more cases the dual was reduced to a nominal category explicitly indicating a pair of things, but not requiring dual agreement of adjectives or verbs. Presently, the dual is mostly used as a declension paradigm for numbers du - 'two' , abu - 'both' (and a variant abudu - 'idem') and with personal pronouns aš - 'I' (mudu - 'we (two)') and tu - 'you' (judu -'you (two)').

The indefinite number indicates that the same form of the word can be understood singular or plural, depending both on situation and on other words in the sentence. There are only few words that demonstrate indefinite number, and the indefinite number doesn't have its own forms in Lithuanian. These words are pronouns kas - 'who? what?', kažkas - 'something, somebody' and reflexive pronoun savęs. All of them use inflections of the singular.

The super-plural words are a few numbers and pronouns that indicate a counting not of separate things, but of groups of things.

keleri - 'several (groups of)'

abeji - 'both (groups of)'

(vieneri - 'one (group of)')

dveji - 'two (groups of)'

treji - 'three (groups of)'

ketveri - 'four (groups of)'

penkeri - 'five (groups of)'

šešeri - 'six (groups of)'

septyneri - 'seven (groups of)'

aštuoneri - 'eight (groups of)'

devyneri - 'nine (groups of)'

These words are also used with plurale tantum nouns instead of plural words (keli, abu, du, trys and so on), in which case they indicate not the plural of groups, but just the semantic plural or singular (a word vieneri - 'one' only) of the noun.

Cases of declined words

The main article is Lithuanian declension

• Nominative (vardininkas)
• Genitive (kilmininkas), which also functions similarly to the ablative case in other languages.
• Dative (naudininkas)
• Accusative (galininkas)
• Instrumental (įnagininkas)
• Locative cases:
• Locative (vietininkas)
• Illative (iliatyvas, sometimes referred as kryptininkas) - dialectic, without clear status in the standard Lithuanian
• Allative - obsolete, the singular is reduced to adverbs
• Adessive - extinct
• Vocative (šauksmininkas)

Nouns

Lithuanian grammar makes a distinction between proper and common nouns. Only proper nouns are capitalized. Some nouns, for example sun and moon, can be both proper and common.

There are masculine gender and feminine gender. A rough rule of thumb is that almost all masculine nouns in nominative case end in -s and most feminine - in -(i)a or -ė. There are no strict rules governing the gender. For example, upė (river) is feminine but upelis (rivulet) is masculine. There is no neutral gender ("it gender"), but there are a few words that can be applied to both genders equally. Most of the time they describe people, have negative connotations, and end in -a, for example vėpla - dummy, elgeta - begger, naktibalda - a person who does not sleep, but mėmė - gawk.

Number

Most nouns have singular and plural numbers. Lithuanian language also has dual number but right now it is almost extinct and used only sporadically. There are some words that have only singular (for example, pienas - milk, auksas - gold, gripas - flu, laimė - happiness) or only plural (for example, lubos - ceiling, miltai - flour, kelnės - trousers) forms. Most of such words are abstract (i.e., represent concepts like luck or love and not tangible things such as table or house), describe material or name a disease. However, in some instances, for example poetic language, it is possible to use singular nouns in plural form.

Noun modification by numeral

In Lithuanian, unlike in Romance/Germanic languages, the form of a count noun depends on final digits of the number.

Number ends with	Form	Example
1 (excluding 11)	Singular	31 litas
2–9 (excluding 12–19)	Plural	25 litai
0 or 11–19	Special case: Singular + noun in plural genitive	110 litų 111 litų

Note: Plural or singular without the case means that the word or words can be declined in any case in plural or singular respectively, but Plural genitive means, that the second word remains undeclined.

Declension

Nouns in Lithuanian language have five declensions which are defined by the inflection in singular nominative and genitive cases. It is currently proposed that the classical declension rules should be reformed to better reflect inflections.

Only few borrowed words, like taksi (taxi) or tabu (taboo), are not subject to declension rules. The locative case has four forms: inessive (the regular and most common form), illative (for example, dvaran, dvaruosna, miškuosna; used sparingly), allative (only used in a few idiomic expressions like velniop, šuniop, galop, vakarop), adessive (for example, dvariep, dvaruosemp, namiep; historical or dialectical; extinct in modern standard Lithuanian). The later three are adverb-forming cases.

#	Inflection in singular cases		Examples	Notes
	Nominative	Genitive
I	-as, -is, -ys	-o	Vyras (man), medis (tree), traukinys (train)	Masculine nouns, very popular and strong
II	-a, -i, -ė	-os, -ės	Varna (crow), marti (daughter-in-law), varlė (frog)	With few exceptions, feminine nouns
III	-is	-ies	Avis (sheep), dantis (teeth), pilis (castle)	Both masculine and feminine nouns are mixed in, weaker than the first two
IV	-us	-aus	Sūnus (son), skaičius (digit), medus (honey)	Archaic, has few words
V	-uo, -ė	-(en)s, -(er)s	Vanduo (water), akmuo (stone), duktė (daughter)	Archaic, has very few words, becoming extinct as some nouns try to migrate to the first or second declensions

First Declension

-as, -is, -ys (masculine)

	vaikas = child		brolis = brother		arklys = horse
	singular	plural	singular	plural	singular	plural
Nominative	vaikas	vaikai	brolis	broliai	arklys	arkliai
Genitive	vaiko	vaikų	brolio	brolių	arklio	arklių
Dative	vaikui	vaikams	broliui	broliams	arkliui	arkliams
Accusative	vaiką	vaikus	brolį	brolius	arklį	arklius
Instrumental	vaiku	vaikais	broliu	broliais	arkliu	arkliais
Locative	vaike	vaikuose	brolyje	broliuose	arklyje	arkliuose
Vocative	vaike	vaikai	broli	broliai	arkly	arkliai

(note that the -e ending for the vocative singular applies only to common nouns; proper nouns take the ending -ai. So, for example Jonas = John [nominative] and Jonai! = John! [vocative])

Second Declension

-a, -ė, -ti (feminine)

	motina = mother		katė = cat		pati = wife
	singular	plural	singular	plural	singular	plural
Nominative	motina	motinos	katė	katės	pati	pačios
Genitive	motinos	motinų	katės	kačių	pačios	pačių
Dative	motinai	motinoms	katei	katėms	pačiai	pačioms
Accusative	motiną	motinas	katę	kates	pačią	pačias
Instrumental	motina	motinomis	kate	katėmis	pačia	pačiomis
Locative	motinoje	motinose	katėje	katėse	pačioje	pačiose
Vocative	motina	motinos	kate	katės	pati (or pačia)	pačios

(pati is one of only two Lithuanian nouns with the ending -ti; the other is marti, which means "daughter-in-law")

Third Declension

-is (masculine & feminine)

	vagis = thief (masculine)		akis = eye (feminine)
	singular	plural	singular	plural
Nominative	vagis	vagys	akis	akys
Genitive	vagies	vagių	akies	akių
Dative	vagiui	vagims	akiai	akims
Accusative	vagį	vagis	akį	akis
Instrumental	vagimi	vagimis	akimi	akimis
Locative	vagyje	vagyse	akyje	akyse
Vocative	vagie	vagys	akie	akys

(notice that there are only minor differences in masculine and feminine nouns of this declension, namely the dative and instrumental singular forms)

Fourth Declension

-us, -ius (masculine)

	sūnus = son		profesorius = professor
	singular	plural	singular	plural
Nominative	sūnus	sūnūs	profesorius	profesoriai
Genitive	sūnaus	sūnų	profesoriaus	profesorių
Dative	sūnui	sūnums	profesoriui	profesoriams
Accusative	sūnų	sūnus	profesorių	profesorius
Instrumental	sūnumi	sūnumis	profesoriumi	profesoriais
Locative	sūnuje	sūnuose	profesoriuje	profesoriuose
Vocative	sūnau	sūnūs	profesoriau	profesoriai

(again, make note of the slight differences between the two variants of this declension - in the plural the nominative, dative, instrumental and vocative cases all differ, resembling first declension forms)

Fifth Declension

-uo (masculine)

There are also two feminine nouns of the fifth declension: sesuo (sister) and duktė (daughter).

	vanduo = water
	singular	plural	singular	plural
Nominative	vanduo	vandenys	sesuo/duktė	seserys/dukterys
Genitive	vandens	vandenų	sesers/dukters	seserų/dukterų
Dative	vandeniui	vandenims	seseriai/dukteriai	seserims/dukterims
Accusative	vandenį	vandenis	seserį/dukterį	seseris/dukteris
Instrumental	vandeniu	vandenimis	seseria/dukteria	seserimis/dukterimis
Locative	vandenyje	vandenyse	seseryje/dukteryje	seseryse/dukteryse
Vocative	vandenie	vandenys	seserie/dukterie	seserys/dukterys

Adjectives

Declension

In Lithuanian language adjectives have three declensions determined by the singular and plural nominative case inflections. It is proposed that the three classical declension rules would be regrouped into four: two masculine and two feminine.

Declension	Singular nom. inflection		Plural nom. inflection		Examples
	Masculine	Feminine	Masculine	Feminine
I	-(i)as	-(i)a	-i	-os	šaltas, šalta (cold), šlapias, šlapia (damp)
II	-us	-i	-ūs	-ios	švarus, švari (clean), malonus, maloni (pleasant)
III	-is	-ė	-iai	-ės	varinis, varinė (copper), laukinis, laukinė (wild)
	-is	-ė	-i	-ės	didelis, didelė (big)

In the Lithuanian language, adjectives have two numbers - singular and plural. Unlike nouns, adjectives have three genders. Adjectives are matched with nouns in terms of numbers, genders, and cases.

	geras = good
	masculine		feminine
	singular	plural	singular	plural
Nominative	geras	geri	gera	geros
Genitive	gero	gerų	geros	gerų
Dative	geram	geriems	gerai	geroms
Accusative	gerą	gerus	gerą	geras
Instrumental	geru	gerais	gera	geromis
Locative	gerame	geruose	geroje	gerose

	gražus = beautiful
	masculine		feminine
	singular	plural	singular	plural
Nominative	gražus	gražūs	graži	gražios
Genitive	gražaus	gražių	gražios	gražių
Dative	gražiam	gražiems	gražiai	gražioms
Accusative	gražų	gražius	gražią	gražias
Instrumental	gražiu	gražiais	gražia	gražiomis
Locative	gražiame	gražiuose	gražioje	gražiose

	vidutinis = middle
	masculine		feminine
	singular	plural	singular	plural
Nominative	vidutinis	vidutiniai	vidutinė	vidutinės
Genitive	vidutinio	vidutinių	vidutinės	vidutinių
Dative	vidutiniam	vidutiniams	vidutinei	vidutinėms
Accusative	vidutinį	vidutinius	vidutinę	vidutines
Instrumental	vidutiniu	vidutiniais	vidutine	vidutinėmis
Locative	vidutiniame	vidutiniuose	vidutinėje	vidutinėse

For example, gatvė (street) and kelias (road) are matched with tiesus (straight):

• Tiesi gatvė vs. tiesios gatvės (singular vs. plural)
• Tiesi gatvė vs. tiesus kelias (feminine vs. masculine)
• Tiesi gatvė vs. tiesią gatvę (nominative vs. accusative case)

This does not apply in case of the neutral gender adjectives because nouns do not have neutral gender. Such adjectives are used to describe a feature detached from a clear thing or concept. For example, rūsyje buvo vėsu - it was cool in the cellar; gera tave matyti - it's good to see you; jis matė šilta ir šalta - he saw cold and hot (he went through fire and water). Adjectives that end in -is do not have the neutral gender. Most of the time neutral gender adjectives are written just like feminine adjectives. However, vocally neutral gender is distinct by different stressing. Also neutral gender does not have any numbers or cases, and it's mostly used for predicatives. Usage in the role of object (like in "jis matė šilta ir šalta") is rare.

The Lithuanian language has five degrees of comparison. The three main degrees are the same as in English language. Note that there are no irregular adjectives and all adjectives have the same suffixes. All such adjectives still need to match the nouns in terms of case, number, and gender. Neutral gender comparative degree is the same as adjective comparative degree.

Language	Gender	absolute	comparative		superlative
Lithuanian	Masculine	Geras	Gerėlesnis	Geresnis	Geriausias	Pats/visų geriausias
	Feminine	Gera	Gerėlesnė	Geresnė	Geriausia	Pati/visų geriausia
	Neutral	Gera	Gerėliau	Geriau	Geriausia	Visų geriausia
English		Good	A tiny bit better	Better	Best	The very best
Lithuanian	Masculine	Gražus	Gražėlesnis	Gražesnis	Gražiausias	Pats/visų gražiausias
	Feminine	Graži	Gražėlesnė	Gražesnė	Gražiausia	Pati/visų gražiausia
	Neutral	Gražu	Gražėliau	Gražiau	Gražiausia	Visų gražiausia
English		Beautiful	A tiny bit more beautiful	More beautiful	Most beautiful	The most beautiful

Adjectives have also pronominal form that is formed by merging adjectives with third person personal pronouns.

Pronouns

Personal pronouns

Personal pronouns aš (I), tu (you) jis (he, it), ji (she, it) are declined as follows:

			Nominative	Genitive	Dative	Accusative	Instrumental	Locative
Singular	1st Person		aš	manęs	man	mane	manimi	manyje
	2nd Person		tu	tavęs	tau	tave	tavimi	tavyje
	3rd Person	Masculine	jis	jo	jam	jį	juo	jame
		Feminine	ji	jos	jai	ją	ja	joje
Dual	1st Person	Masculine	mudu	mudviejų	mudviem	mudu	mudviem	mudviese
		Feminine	mudvi			mudvi
	2nd Person	Masculine	judu	judviejų	judviem	judu	judviem	judviese
		Feminine	judvi			judvi
	3rd Person	Masculine	juodu or jiedu	jųdviejų	jiedviem	juodu	jiemdviem	juodviese
		Feminine	jiedvi	jųdviejų	jodviem	jiedvi	jodviem	jiedviese
Plural	1st Person		mes	mūsų	mums	mus	mumis	mumyse
	2nd Person		jūs	jūsų	jums	jus	jumis	jumyse
	3rd Person	Masculine	jie	jų	jiems	juos	jais	juose
		Feminine	jos	jų	joms	jas	jomis	jose

Note, that the table contains only the objective genitive of pronouns aš or tu. The possessive genitives of these words are mano or tavo respectively. Compare jis manęs laukia - 'he waits for me' and mano draugas - 'my friend' ('friend ' is in masculine), but in jis mūsų laukia - 'he waits for us' and mūsų draugas - 'our friend' the both genitives coincide as in almost any word.

Reflexive pronoun

The reflexive pronoun savęs is declined as a personal pronoun tu (savęs - sau - save ...), but it hasn't the singular nominative and the plural cases.

The Verb

Each Lithuanian verb belongs to one of three different conjugations:

• The first conjugation is the most commonly found in Lithuanian, encompassing those verbs whose infinite form ends in -ati, -oti, -auti, -uoti or a consonant followed by -ti (e.g. dirbti). This conjugation also has the highest occurrence of irregularity of all the Lithuanian verb cases.
• The second conjugation refers to those verbs whose infinitive form ends in -ėti. There are hardly any instances of irregularity for this conjugation. An exception: verbs, that have -ėja in the Present Tense (like didėti / didėja / didėjo 'to increase'), belong to the first conjugation.
• The third conjugation consists of those verbs whose infinitive form ends in -yti. An exception: verbs, that have -ija in the Present Tense (like rūdyti / rūdija / rūdijo 'to rust'), belong to the first conjugation.

The Present Tense

This is the basic tense in Lithuanian which describes present or ongoing actions or, sometimes, actions without definite tense.

	dirbti = to work	norėti = to want	skaityti = to read
I	dirbu	noriu	skaitau
You (singular)	dirbi	nori	skaitai
He/She/It	dirba	nori	skaito
We	dirbame	norime	skaitome
You (plural)	dirbate	norite	skaitote
They	dirba	nori	skaito

e.g. dirbu = 'I work', (tu) nori = 'You want', skaitome = 'We read' (present tense)

The Past Tense

This is the basic tense in Lithuanian which describes past actions, particularly if they are finished.

	dirbti = to work	norėti = to want	skaityti = to read
I	dirbau	norėjau	skaičiau
You (singular)	dirbai	norėjai	skaitei
He/She/It	dirbo	norėjo	skaitė
We	dirbome	norėjome	skaitėme
You (plural)	dirbote	norėjote	skaitėte
They	dirbo	norėjo	skaitė

e.g. dirbau = 'I worked', norėjai = 'You wanted', skaitėme = 'We read' (past tense)

The Past Iterative Tense

The basic meaning of this tense translates as "used to" in English. Its construction is simple:

• Remove the infinitive ending -ti.
• Add the suffix -dav- to the stem.
• Finally, add the corresponding ending of the past tense for the first conjugation.

	dirbti = to work	norėti = to want	skaityti = to read
I	dirbdavau	norėdavau	skaitydavau
You (singular)	dirbdavai	norėdavai	skaitydavai
He/She/It	dirbdavo	norėdavo	skaitydavo
We	dirbdavome	norėdavome	skaitydavome
You (plural)	dirbdavote	norėdavote	skaitydavote
They	dirbdavo	norėdavo	skaitydavo

e.g. dirbdavau = 'I used to work', norėdavai = 'You used to want', skaitydavome = 'We used to read'

The Future Tense

This tense basically describes what will happen in the future. It is relatively simple to form:

• Remove the -ti ending from the infinitive form of the verb.
• Add the -s- suffix which is used to form the Future Tense. Note, that ...š or ...ž + -s- assimilates to š without the final s (the infinitive vežti 'to transport' gives vešiu, veši, veš etc. in the Future Tense).
• Add the appropriate ending.

	dirbti = to work	norėti = to want	skaityti = to read
I	dirbsiu	norėsiu	skaitysiu
You (singular)	dirbsi	norėsi	skaitysi
He/She/It	dirbs	norės	skaitys
We	dirbsime	norėsime	skaitysime
You (plural)	dirbsite	norėsite	skaitysite
They	dirbs	norės	skaitys

e.g. dirbsiu = 'I will work', norėsi = 'You will want', skaitysime = 'We will read'

Participles

Lithuanian retains a rich system of participles, thirteen in total. In contrast English contains just two: the present participle ("the eating cow") and the past participle ("the eaten cow").

The Lithuanian participles are as follows, complete with masculine and feminine forms respectively (where applicable):

1. Present active - valgąs/valganti ("the one who is eating")

2. Past active - valgęs/valgiusi ("the one who has eaten")

3. Frequentative past active - valgydavęs/valgydavusi ("the one who used to eat")

4. Future active - valgysiąs/valgysianti ("the one who will eat"/"the one who will be eating")

5. Present passive - valgomas/valgoma ("something that is being eaten")

6. Past passive - valgytas/valgyta ("something that has been eaten")

7. Future passive - valgysimas/valgysima ("something that will be eaten")

8. Adverbial present active - valgant ("while eating")

9. Adverbial past active - valgius ("after having eaten")

10. Adverbial frequentative past - valgydavus ("after having eaten repeatedly")

11. Adverbial future active - valgysiant ("having to eat")

12. Special adverbial present active - valgydamas/valgydama ("eating")

13. Participle of necessity - valgytinas/valgytina ("something to be eaten")

The adverbial participles (8-11) are not declined.

The prefixes of verbs

Prefixes are added to verbs, to make new verbs, that have different color of the primary verb's meaning. The made verb and the primary verb are considered different words, taking different positions in vocabularies, however their meanings are very close, often showing similarity to being forms of a single verb. Prefixes have mostly restrictive sense, so they restrict the meaning of the primary not prefixed verb to certain direction, amount or limits of time. In addition to what, verbs often get meaning of more perfect action with prefix added. So, a prefix is a good indicator of perfective verb, but the perfective aspect never depends on just a prefix. In fact, some verbs without prefixes may be used as perfective as well as many verbs with prefixes may be understood as imperfective.

• ap- round (direction, perfective)
• api- is a variant of ap- before b or p
• at- from, from somewhere (direction; place, perfective)
• ati- is a variant of at- before d or t
• į- in (direction, perfective), be able to (imperfective)
• iš- out (direction, sometimes perfective)
• nu- away (direction), from the start place (action with some direction, perfective)
• pa- a bit, slightly, some time (time or amount, imperfective), till end (for single actions, cf su-, time or amount, perfective), under (direction, perfective)
• par- similar to English (Latin) re- (with some differences; perfective)
• per- through (place, perfective), thoroughly, completely (perfective)
• pra- by (direction, perfective), starting (time, perfective rarely)
• pri- up, to (direction or place, perfective), to the place (of the action) (place, perfective), much, many (amount, sometimes perfective)
• su- from everywhere (direction), together (place, perfective), till end (time, perfective), completely (long or complex action, perfective)
• už- behind (direction, perfective), in (for limited time, cf į-) (direction and time, perfective), suddenly, unexpectedly (time, perfective)
• už- on, over (direction or place), completely (short action, cf. su-, perfective)

Some rules may be useful, using prefixes for verbs:

• ne- and be- formally are prefixes of verbs too. But they come out of the rule, making different forms of the same verb, rather than a new verb. ne- is a prefix, that makes negative form of a verb, but be- says that action of a verb may be interrupted. Both ne- and be- are used before any other prefixes of a verb. Also ne- precedes be- making a complex prefix nebe-. be- is mostly used in participles, semi-participles or sub-participles, for pointing that synchronization of the main action of a sentence with the action of the participle isn't very strict.
• There is no more than one prefix in a verb, if we do not count prefixes ne-, be- or nebe-. Only few words are exception from this.
• The indicator of reflexion -si is used between the prefix and the root if the verb is prefixed, e. g.

nešasi but nusineša,  atsineša

laikytis but susilaikyti, pasilaikyti

teirautis but pasiteirauti

• The same rule is applied, when ne-, be-, or nebe- is added:

nešasi but nesineša, nebesineša, also nenusineša, neatsineša

laikytis, but nesilaikyti, also nesusilaikyti, nepasilaikyti

teirautis but nesiteirauti, also nepasiteirauti

Verb Categories

Tenses

• The present tense
• The past tense
• The past iterative tense
• The future tense
• (The four perfect tenses, periphrastic)
• (The four inchoative tenses, periphrastic)

Moods

• The indicative mood (with all tenses)
• The relative mood (with all tenses, non-conjugated)
• The imperative mood (without distinction of tenses)
• The optative mood (without distinction of tenses, having the 3rd person only, sometimes treated as the 3rd person of the imperative mood)
• The conditional mood (without distinction of tenses)
• (The optative mood II, periphrastic, based on the conditional mood)
• The negative form
• The indeterminate form (for true action with uncertain aspect)
• (The intensified periphrasis, based on the verbal intensifier)

The three moods without distinction of tenses have periphrastic perfect along with their main form, and the aspect of perfection could be expressed.

Voices

• The Active voice
• The reflexive form (voice-like form, which can be sometimes in passive voice too)
• The Passive voice
• in a case of a participle it's a different grammatic form with 3 main tenses (it doesn't have the past iterative tense).
• in a case of conjugated verbs it's periphrastic, based on the passive participles (3 main tenses).

Conjugative verbal forms

• The present tense
• The past tense
• The past iterative tense
• The future tense
• The imperative mood
• The optative mood (having the 3rd person only, sometimes treated as the 3rd person of the imperative mood)
• The conditional mood

Non-conjugative verbal forms

The non-conjugative verbal forms are close to other non-conjugated grammatical categories, e. g. the participles are close to adjectives. But they also retain (except the verbal intensifier) verbal specifics to have their own subject (except the infinitive, the gerund and the semi-participle) objects and adjuncts.

• The infinitive
• The relative mood
• The gerund, or the verbal noun, is masculine masculine noun, regularly made from any verb, not having distinction of tenses and not used in the plural number in its direct sense. The gerund has its own specific order, to put its objects.
• The sub-participles are verbal adverbs, not declined, being of four tenses (the present, the past, the past iterative and the future) of the active voice. The sub-participle has its own specific order, to put its subject.
• The semi-participle is a verbal adverb, closer to the main verb in the sentence than the sub-participle, not having distinction of tenses. The semi-participle isn't declined, but it has forms of number and gender, and they should be used in concord with the subject of the main verb in the sentence (whereas semi-participle couldn't have its own subject).
• The verbal intensifier is a verbal particle, used to mark more intensive action, than one of the single verb. It is quite always used with a verb of the same stem and never has its separate objects or adjuncts.
• The verbal interjection could be formed from verbs of certain categories. It's used like a simple interjection, but could have its own subject, objects and (not often) adjuncts. The verbal interjection is considered a separate part of speech in most of grammars of Lithuanian.

Syntax

Word order

Lithuanian has SVO (Subject-Verb-Object) as the main word order:

Adjunct(s)(temporal, locative, causal) + Subject +  Adjunct(s)(other)

+ Verb +  Object(s) + Infinitive  + other parts.

At the same time Lithuanian as a highly declined language is often considered to have the free word order. This idea is partially true, and a sentence such as "Today I saw a beautiful girl at the movies" could be said or written in many ways:

Šiandien kine aš mačiau gražią mergaitę. (the main order)

Today - at the movies - I - saw - a beautiful - girl.

Aš mačiau gražią mergaitę kine šiandien.
Šiandien aš mačiau gražią mergaitę kine.
Gražią mergaitę mačiau aš kine šiandien.
Gražią mergaitę aš šiandien mačiau kine.
Kine šiandien aš mačiau gražią mergaitę.
Kine gražią mergaitę aš mačiau šiandien.

However word order isn't a subject of intonation only. Different word orders often have different meanings in Lithuanian. There are also some strict rules and some tendencies in using different word placing. For example, a word that provides new information (rheme, or comment) has tendency to be postponed after other words, but not always to the end of the sentence. Adjectives precede nouns like they do in English, but order of adjectives in an adjective group is different than in English. If the main word order is followed, a temporal, locative or causal adjunct is put at the beginning of the sentence, while adjuncts of other types go directly before the verb and its objects (see the SVO rule above).

The word order in Lithuanian can also be described, using concepts of theme and rheme. Looking from this point of view, the structure of a sentence is following:

Initial complementary words or clauses + theme + middle words or

clauses + rheme + final complementary words or clauses

The middle words or clauses are more significant words or word groups other than the theme or the rheme, but complementary words or clauses (both the initial and the final) are less significant or secondary. Local, causal or temporal adjuncts are typical parts of the initial complementary words group, while other complementary words are put to the final group. If an adjunct is more significant in a sentence, it should be put to the middle group or even used as theme or as rheme. The same is true, considering any other part of sentence, but the Subject and the Verb aren't complementary words typically, and they often serve as the theme and as the rheme respectively. Note, that a sentence can lack any part of the structure, except the rheme.

Verbal periphrastic constructions

Prepositions

Prepositions tell us where an object is or what direction it is going. Some cases of nouns, such as the genitive, accusative and instrumental, take prepositions. Some cases never take prepositions (such as locative and nominative). Certain prepositions are used with certain cases. Below is a list of some common prepositions used in Lithuanian.

Used with genitive form of noun

• iš - from, out of
• ant - on
• iki - until
• po - after, past, succeeding
• prie - near, at
• už - behind

Used with instrumental form of noun

• po - under
• su - with
• sulig - up to
• ties - by, over

Used with accusative form of noun

• į - in
• pas - to, at
• per - through, during
• apie - about

Conjunctions

Conjunctions are used to link together clauses in a sentence, for example "I thought it would be a nice day but it was raining." Some common conjunctions in Lithuanian are:

• ir - and
• bet - but
• ar - used to start a question, but can also mean "or"
• jei - if
• kad - that (not the demonstrative pronoun)
• kol - until
• arba - or/but
• nes - because
• tačiau - however

External links

• Some Unique Features of Lithuanian on Lituanus.org
• Some Unsolved Riddles of Lithuanian Linguistics on Lituanus.org
• The Historical Grammar of Lithuanian language