opposite

(noun): Something opposite or contrary to something else.
(noun): An opponent.
(noun): An antonym.
(noun): An additive inverse.
(adjective): Located directly across from something else, or from each other.
(adjective): Of leaves and flowers, positioned directly across from each other on a stem.
(adjective): Facing in the other direction.
(adjective): Of either of two complementary or mutually exclusive things.
(adjective): Extremely different; inconsistent; contrary; repugnant; antagonistic.
(adverb): In an opposite position.
(preposition): Facing, or across from.
(preposition): In a complementary role to.
(preposition): On another channel at the same time.