Synonyms of the word

antonymous

• adj. having an opposite or diametrically opposed meaning.
• adj. of, or being an antonym; antonymic.

complementary

• adj. Acting as a complement.
• adj. (genetics) Of the specific pairings of the bases in DNA and RNA.
• adj. (physics) Pertaining to pairs of properties in quantum mechanics that are inversely related to each other,…
• n. A complementary colour.
• n. (obsolete) One skilled in compliments.

contradictory

• adj. That contradicts something, such as an argument.
• adj. That is itself a contradiction.
• adj. That is diametrically opposed to something.
• adj. Mutually exclusive.
• adj. Tending to contradict or oppose, contrarious.
• n. (logic) Any of a pair of propositions, that cannot both be true or both be false.

contrary

• adj. Opposite; in an opposite direction; in opposition; adverse.
• adj. Opposed; contradictory; inconsistent.
• adj. Given to opposition; perverse; wayward.
• adv. Contrarily.
• n. The opposite.
• n. One of a pair of propositions that cannot both be simultaneously true.
• v. (obsolete) To oppose; to frustrate.
• v. (obsolete) To impugn.
• v. (obsolete) To contradict (someone or something).
• v. (obsolete) To do the opposite of (someone or something).
• v. (obsolete) To act inconsistently or perversely; to act in opposition to.
• v. (obsolete) To argue; to debate; to uphold an opposite opinion.
• v. (obsolete) To be self-contradictory; to become reversed.

contrastive

• adj. contrasting.

converse

• v. (formal, intransitive) To talk; to engage in conversation.
• v. To keep company; to hold intimate intercourse; to commune; followed by with.
• v. (obsolete) To have knowledge of (a thing), from long intercourse or study.
• n. (now literary) Familiar discourse; free interchange of thoughts or views; conversation; chat.
• adj. Opposite; reversed in order or relation; reciprocal.
• n. The opposite or reverse.
• n. (logic) Of a proposition or theorem of the form: given that "If A is true, then B is true", then "If B…
• n. (semantics) One of a pair of terms that name or describe a relationship from opposite perspectives; converse…

incompatible

• adj. Of two things: that cannot coexist; not congruous because of differences; irreconcilable; disagreeing.
• adj. (chemistry) Incapable of being together without mutual reaction or decomposition, as certain medicines.
• n. (medicine, chemistry, chiefly in the plural) An incompatible substance; one of a group of things that…
• n. (philosophy) A consequent of a contrary.