antonym

[ an-tuh-nim ]
/ ˈæn tə nɪm /

noun

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

Origin of antonym

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

OTHER WORDS FROM antonym

an·ton·y·mous [an-ton-uh-muh s] /ænˈtɒn ə məs/, an·to·nym·ic, adjective an·ton·y·my, noun

British Dictionary definitions for antonymic

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