D defs.my
Entry 1 sense Webster, 1913

Antonym

/ǎnt′ənĭm'/ · An·to·nym · IPA /ˈæn.təˌnɪm/
01 n. A word of opposite meaning; a counterterm; -- used as a correlative of synonym.
  1. 1.
    A word of opposite meaning; a counterterm; -- used as a correlative of synonym.[R.]