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27 results for: noxious

Dictionary Entries (14 more entries. View all »)
Dictionary.com Unabridged (v 1.1) - Cite This Source
nox·ious    Audio Help   [nok-shuhs] Pronunciation Key
–adjective
1.harmful or injurious to health or physical well-being: noxious fumes.
2.morally harmful; corrupting; pernicious: a noxious plan to spread dissension.
[Origin: 1605–15; < L noxius harmful, hurtful, injurious, equiv. to nox(a) harm, hurt, injury (akin to nocére to do harm, inflict injury; see innocent) + -ius -ious]

—Related forms
nox·ious·ly, adverb
nox·ious·ness, noun

—Synonyms 1. hurtful, unwholesome, unhealthy, nocuous, detrimental, deleterious. 2. corruptive.
—Antonyms 1, 2. harmless.
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

Thesaurus Entries
  Roget's II: The New Thesaurus - Cite This Source
Main Entry:  virulent
Part of Speech:  adjective
Definition:  Extremely destructive or harmful.
Synonyms:  baneful, deadly, malignant, pernicious, pestilent, pestilential
Source:  Roget's II: The New Thesaurus, Third Edition
by the Editors of the American Heritage® Dictionary.
Copyright © 2003, 1995 by Houghton Mifflin Harcourt Publishing Company.
Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


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