In
phonology,
minimal pairs are pairs of
words or phrases in a particular
language, which differ in only one phonological element, such as a
phone,
phoneme,
toneme or
chroneme and have a distinct meaning. They are used to demonstrate that two
phones constitute two separate phonemes in the language.
As an example for English vowels, the pair "let" + "lit" can be used to demonstrate that the phones [ɛ] (in let) and [ɪ] (in lit) do in fact represent distinct phonemes /ɛ/ and /ɪ/. An example for English consonants is the minimal pair of "pat" + "bat". In phonetics, this pair, like any other, differs in number of ways. In this case, the contrast appears largely to be conveyed with a difference in the voice onset time of the initial consonant as the configuration of the mouth is same for [p] and [b]; however, there is also a possible difference in duration, which visual analysis using high quality video supports.
Phonemic differentiation may vary between different dialects of a language, so that a particular minimal pair in one accent is a pair of homophones in another. This does not necessarily mean that one of the phonemes is absent in the homonym accent; merely that it is not present in the same range of contexts.
Examples
Differentiations in English
Following pairs prove existence of various distinct phonemes in English.
| word 1
| word 2
| IPA 1
| IPA 2
| note |
| pin
| bin
| /pɪn/
| /bɪn/
| initial consonant
|
| rot
| lot
| /rɑt/
| /lɑt/ |
| zeal
| seal
| /ziːl/
| /siːl/ |
| bin
| bean
| /bɪn/
| /biːn/
| vowel
|
| pen
| pan
| /pɛn/
| /pæn/ |
| hat
| had
| /hæt/
| /hæd/
| final consonant |
Differentiating consonants with same location and manner of articulation
In the articulation of
bilabial plosives, 4 phones are defined by the characteristics voiced/unvoiced and aspirated/unaspirated: [p], [pʰ], [b] and [bʱ]. In different languages only some of these may occur and the number of phonemes formed may be different again.
| Pattern
| Language(s)
| Explanation |
|
| English
| Phones [p] as in "spin" and [pʰ] as in "pin" both occur, but are allophones of the phoneme /p/ and no minimal pair can be found to distinguish them, but the word "bin" shows that the phone [b] forms a phoneme /b/ separate from /p/. |
|
| Mandarin
| Only phones (and phonemes) [p] and [pʰ] occur. In the Pinyin transcription /pʰ/ is written "p" and /p/ is written "b" (using the two available Latin letters for the two phonemes). |
|
| French/Portuguese
| In romance languages and other European languages only phones (and phonemes) [p] and [b] occur. |
|
| Hindi/Urdu
| All four phones are separate phonemes. |
|
| Thai
| Three phones occur and form three phonemes, as in these examples: - ใบ /baɪ/ "sheet"
- ไป /paɪ/ "to go"
- ภัย /pʰaɪ/ "danger"
|
Differentiating vowels
The following table shows a minimal set in French distinguishing vowels, some or all of which may sound alike to an Anglophone, because the [œ] and [y] sounds do not exist in English:
| word
| IPA
| meaning |
| cire
| /siʁ/
| wax |
| sûre
| /syʁ/
| sure |
| sœur
| /sœʁ/
| sister |
| sieur
| /sjœʁ/
| sir |
| sueur
| /sɥœʁ/
| sweat |
Differentiating consonants
A minimal triplet of consonants in French is:
| word
| IPA
| meaning |
| bête noire
| /bɛtnwaʁ/
| black beast, pet peeve |
| baie noire
| /bɛnwaʁ/
| black berry (not blackberry, which is mûre sauvage) |
| baignoire
| /bɛɲwaʁ/
| bathtub |
Because [tn] is not a single phoneme in French, this shows a minimal pair between the presence and absence of [t] next to [n], which shares its point of articulation. [n] and [ɲ] differ only in point of articulation.
There are three verbs in Hebrew which demonstrate the distinction, in some dialects, between a velar stop and an uvular stop on one hand, and a glottal stop with and without tightening of the throat on the other:
| word
| IPA
| meaning |
| קרא
| /qɔːrɔːʔ/
| read, call |
| קרע
| /qɔːraʕ/
| tear apart |
| כרע
| /kɔːraʕ/
| kneel |
In the following two Hebrew verbs, the only distinction is a glottal stop in the middle of the first word:
| word
| IPA
| meaning |
| לראות
| /liːrʔoːθ/
| see |
| לירות
| /liːroːθ/
| shoot |
In Korean, phones [ɾ] in "Korea' and [l] in "Seoul" are allophones of one phoneme and are perceived by native speakers of Korean as a single phoneme. The difference is that [ɾ] is an allophone of this phoneme before vowels.
In Spanish, [z] and [s] are both allophones of /s/. [z] appears only before voiced consonants as in mismo /mizmo/.
Differentiating chronemes
Hungarian,
Italian and
Polish have distinctive
length of consonants, as did
Latin. A differentiator for length may be called a
chroneme. In the International Phonetic Alphabet (IPA), lengthening can be indicated by doubling the symbol, or by the special sign /ː/. Doubling is commonly used for consonants, while the special symbol is used for vowels. E.g. in Italian:
| word
| IPA
| meaning |
| pala
| /ˈpala/
| spade |
| palla
| /ˈpalla/
| ball |
Hungarian, German and Thai have distinctive vowel length, as did Latin. E.g. in Thai (and compare this example also to the one on tone):
| word
| IPA
| RTGS
| quality
| meaning |
| เขา
| /kʰǎw/
| khǎo
| short, rising tone
| he/she |
| ขาว
| /kʰǎːw/
| khǎo
| long, rising tone
| white |
| เข้า
| /kʰâw/
| khâo
| short, falling tone
| enter |
| ข้าว
| /kʰâːw/
| khâo
| long, falling tone
| rice |
| เข่า
| /kʰàw/
| khào
| short, low tone
| knee |
| ข่าว
| /kʰàːw/
| khào
| long, low tone
| news |
Differentiating tonemes
Languages such as
Mandarin Chinese,
Thai and many
African languages. (See:
pitch accent and
tonal language.) For example in Thai:
| word
| IPA
| RTGS
| quality
| meaning |
| ขาว
| /kʰǎːw/
| khǎ:o
| rising tone
| white |
| ข้าว
| /kʰâːw/
| khâ:o
| falling tone
| rice |
| ข่าว
| /kʰàːw/
| khà:o
| low tone
| news |
Differentiating stress
Spanish,
Portuguese,
Romanian and
Italian have many minimal pairs differing only in stress.
Dutch has several, e.g. (stress indicated by acute accent):
| language
| word
| IPA
| meaning |
| Dutch
| voorkómen
| /foːrˈkoːmə/
| prevent |
| Dutch
| vóórkomen
| /ˈfoːrkoːmə/
| occur |
| Romanian
| copíi
| /koˈpi/
| children |
| Romanian
| cópii
| /ˈkopi/
| copies |
| Portuguese
| andarão
| /ãdaˈɾãw/
| will walk |
| Portuguese
| andaram
| /ãˈdaɾãw/
| walked |
| Italian
| becchino
| /beˈkkino/
| undertaker |
| Italian
| becchino
| /ˈbekkino/
| let them peck |
| Spanish
| límite
| /'limite/
| (the) limit |
| Spanish
| limite
| /li'mite/
| he/she limits, you (formal) limit |
| Spanish
| limité
| /limi'te/
| I limited |
Minimal pairs may differ superficially in more than one place if one feature is dependent on the other.
For example, English record (noun) and record (verb) (and similar pairs) appear superficially not to be minimal pairs for stress because they differ in vowel quality as well. However, since the differences in vowel quality are predictable consequences of the differences in stress, such pairs are considered minimal pairs. The case is similar in Russian, eg. мука ('torture, pain') and мука ('flour').
External links
