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, word
ROGET 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.