opposite
Directly facing each other.
“they sat opposite at the table”
Moving or facing away from each other.
“looking in opposite directions”
“they went in opposite directions”
The other one of a complementary pair.
“the opposite sex”
“the two chess kings are set up on squares of opposite colors”
Characterized by opposite extremes; completely opposed.
“diametrical (or opposite) points of view”
“opposite meanings”
Of leaves etc; growing in pairs on either side of a stem.
“opposite leaves”
Altogether different in nature or quality or significance.
“the medicine's effect was opposite to that intended”
“it is said that opposite characters make a union happiest”
Being directly across from each other; facing.
“And I on the opposite shore will be, ready to ride and spread the alarm”
“we lived on opposite sides of the street”
A contestant that you are matched against.
A relation of direct opposition.
Something inverted in sequence or character or effect.
A word that expresses a meaning opposed to the meaning of another word, in which case the two words are antonyms of each other.