antonym Meaning, Definition & Usage

  1. noun a word that expresses a meaning opposed to the meaning of another word, in which case the two words are antonyms of each other
    opposite word; opposite.
    • to him the antonym of `gay' was `depressed'

WordNet


An"to*nym noun
Etymology
Gr. a word used in substitution for another; + , , a word.
Definitions
  1. A word of opposite meaning; a counterterm; -- used as a correlative of synonym. R. C. J. Smith.

Webster 1913