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English definition of “antonym”

antonym

noun [C]     /ˈæn.tə.nɪm/ US  /-t̬ən.ɪm/ specialized
a word that means the opposite of another word: Two antonyms of "light" are "dark" and "heavy". → Compare synonymTerminology and vocabulary synonymGrammar:Gradable opposites (antonyms)See more antonymous     /ænˈtɒn.ɪ.məs/ US  /-ˈtɑː.nɪ-/ adjective "Long" and "short" are antonymous (words).OppositesTerminology and vocabulary
(Definition of antonym noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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