Definition –

n. – a word that means the opposite of another word

e.g. –

• Dark and light are antonyms.

In Hindi – n. विलोम (vilom), विलोभ (vilobh).

Synonym – opposite, reverse.

Antonym – synonym, same.

Cognate word – Conjugate – antonym

• adj. – antonymous

• n. – antonymy