opposite (Noun) — A word that expresses a meaning opposed to the meaning of another word, in which case the two words are antonyms of each other. ex. "to him the opposite of 'gay' was 'depressed'"
opposite (Noun) — A relation of direct opposition. ex. "we thought Sue was older than Bill but just the opposite was true"
opposite (Noun) — A contestant that you are matched against.
opposite (Noun) — Something inverted in sequence, character or effect. ex. "when the direct approach failed he tried the opposite"
opposite (Adjective) — Being directly across from each other; facing. ex. "And I on the opposite shore will be, ready to ride and spread the alarm" ex. "we lived on opposite sides of the street" ex. "at opposite poles"
opposite (Adjective) — (botany) of leaves etc; growing in pairs on either side of a stem. ex. "opposite leaves"
opposite (Adjective) — Moving or facing away from each other. ex. "looking in opposite directions" ex. "they went in opposite directions"
opposite (Adjective) — The other one of a complementary pair. ex. "the opposite sex" ex. "the two chess kings are set up on squares of opposite colours"
opposite (Adjective) — Altogether different in nature, quality or significance. ex. "the medicine's effect was opposite to that intended" ex. "it is said that opposite characters make a union happiest"
opposite (Adjective) — Characterized by opposite extremes; completely opposed. ex. "opposite points of view"
opposite (Adverb) — Directly facing each other. ex. "they sat opposite at the table"