A word which has the opposite meaning of another word.
A word that describes one end of a scale, while its opposite describes the other end, such as large versus small; a gradable antonym.
The opposite.
One of a pair of propositions that cannot both be simultaneously true, though they may both be false.
Contrarily
Opposite; in an opposite direction; in opposition; adverse.
Opposed; contradictory; inconsistent.
Given to opposition; perverse; wayward.