Women in relation to men or men in relation to women. / (attributively) Heterosexual, or otherwise relating to a relationship between a woman and a man.

People who are completely different make ideal partners.

plural of opposite side

A grammatical case expressing contrariety or opposition, corresponding to the English preposition "against".

The complete opposite, opposite in every way.

plural of polar opposite

(geometry) Either of the angles directly opposite to each other when two lines intersect in a plane.

plural of opposite angle

(idiomatic) Holding starkly opposite views on an issue.

A person who opposes; especially a member of an official opposition