Word Study
antonym
CIDE DICTIONARY
antonym, n. [Gr. a word used in substitution for another; + , , a word.].
A word of opposite meaning; a counterterm; -- used as a correlative of synonym. C. J. Smith. [1913 Webster]
OXFORD DICTIONARY
antonym, n. a word opposite in meaning to another in the same language (e.g. bad and good) (opp. SYNONYM).
Derivative
antonymous adj.
Etymology
F antonyme (as ANTI-, SYNONYM)
THESAURUS
antonym
antipode, antipodes, antipole, antithesis, articulation, contra, converse, counter, counterbalance, countercheck, counterpoint, counterpoise, counterpole, counterterm, expression, foil, free form, homograph, homonym, homophone, inverse, lexeme, linguistic form, locution, logos, metonym, minimum free form, monosyllable, obverse, offset, opposite, opposite number, polysyllable, reverse, setoff, syllable, synonym, term, the contrary, the other side, usage, utterance, verbalism, verbum, vis-a-vis, vocable, wordROGET THESAURUS
antonym
Nomenclature
N nomenclature, naming, nuncupation, nomination, baptism, orismology, onomatopoeia, antonomasia, name, appelation, appelative, designation, title, heading, rubric, caption, denomination, by-name, epithet, style, proper name, praenomen, agnomen, cognomen, patronymic, surname, cognomination, eponym, compellation, description, antonym, empty title, empty name, handle to one's name, namesake, term, expression, noun, byword, convertible terms, technical term, cant, named, hight, ycleped, known as, what one may well, call fairly, call properly, call fitly, nuncupatory, nuncupative, cognominal, titular, nominal, orismological, beggar'd all description.Contraposition
N contraposition, opposition, polarity, inversion, opposite side, reverse, inverse, counterpart, antipodes, opposite poles, North and South, antonym, opposite (contrariety), opposite, reverse, inverse, converse, antipodal, subcontrary, fronting, facing, diametrically opposite, Northern, septentrional, Boreal, arctic, Southern, Austral, antarctic, over, over the way, over against, against, face to face, vis-a- vis, as poles asunder.For further exploring for "antonym" in Webster Dictionary Online