antonym
n.
1867, coined to serve as opposite of synonym, from Greek anti- "equal to, instead of, opposite" (see anti-) + -onym "name" (see name, n.). Perhaps introduced to English in the book "Synonyms and Antonyms" (1867) by the Ven. C.J. Smith, M.A.
UNDER the head of Synonyms and Antonyms, Archdeacon Smith arranges words which form an antithesis to one another. The word "antonym" is, we believe, a new formation but useful. ["Journal of Sacred Literature," July 1867]
French antonyme (1842), German antonym (by 1859) are older. The un-Greek alternative counterterm has been left to fade.〔李〕[ant-（anti-）=opposite 相反；onym=mame 名称⇒“an opposite name 相反的名称”→] n. word that means the opposite of another word 反义词
〔李〕[ant-;onym] n.反义词 ←onym (GK onyma)=name 名字
〔蒋〕[ant-=anti相反，onym=name名;’意义相反的词”] 反义词，反义字，反义语