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antonym

[ an-tuh-nim ]
/ ˈæn tə nɪm /
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See synonyms for: antonym / antonyms / antonymic / antonymous on Thesaurus.com

noun

a word opposite in meaning to another. Fast is an antonym of slow.Compare synonym (def. 1).

QUIZZES

QUIZ YOURSELF ON “THEIR,” “THERE,” AND “THEY’RE”

Are you aware how often people swap around “their,” “there,” and “they’re”? Prove you have more than a fair grasp over these commonly confused words.
Question 1 of 7
Which one of these commonly confused words can act as an adverb or a pronoun?

Origin of antonym

First recorded in 1865–70; ant- + (syn)onym

OTHER WORDS FROM antonym

an·ton·y·mous [an-ton-uh-muhs], /ænˈtɒn ə məs/, an·to·nym·ic, adjectivean·ton·y·my, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for antonym

British Dictionary definitions for antonym

antonym
/ (ˈæntənɪm) /

noun

a word that means the opposite of another word``empty'' is an antonym of ``full''

Derived forms of antonym

antonymous (ænˈtɒnɪməs), adjective

Word Origin for antonym

C19: from Greek antōnumia, from anti- + onoma name
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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