Given to opposition; perverse; wayward.
Opposite; in an opposite direction; in opposition; adverse.
Opposed; contradictory; inconsistent.
Contrarily
One of a pair of propositions that cannot both be simultaneously true, though they may both be false.
The opposite.
Stubborn; obstinate.
Difficult to treat (of a medical condition).
Difficult to deal with, solve, or manage.
(of a mathematical problem) Not able to be solved.
Not tractable; not able to be managed, controlled, governed or directed.