The opposite.
One of a pair of propositions that cannot both be simultaneously true, though they may both be false.
Opposite; in an opposite direction; in opposition; adverse.
Opposed; contradictory; inconsistent.
Given to opposition; perverse; wayward.
Contrarily
Used other than figuratively or idiomatically: see wrong, side.
The side of a fabric, often with a less visible color or pattern, that is not intended to be seen on a finished project.