perverse

perverse adjective bad, bad-natured, bad-tempered, base, bellicose, belligerent, boorish, bumptious, captious, churlish, contemptible, contrary, contumelious, corrupt, corrupted, crabbed, cranky, cross, crusty, debauched, degenerate, depraved, deviating, difficult, discourteous, disobedient, disorderly, evil, fractious, froward, hard to deal with, hard to mannge, headstrong, ill-behaved, ill-natured, ill-tempered, improper, impudent, inaffable, incorrigible, inimical, insubordinate, insulting, intractable, irascible, mean, nasty, naughty, negative, negativistic, noncompliant, obstinate, obstreperous, peevish, persisting in error, persisting in fault, perverted, petulant, pugnacious, reprobate, resistive, rude, self-willed, snappish, snarling, spiteful, spleenful, spleeny, splenetic, stubborn, surly, testy, thoughtless, touchy, troublesome, truculent, unaccommodating, uncivil, uncomplaisant, uncompliant, uncooperative, unfriendly, ungallant, ungovernable, unhelpful, unmanageable, unmannerly, unpolite, unruly, untoward, unyielding, venomous, waspish, wayward, wicked, wrong, wrongheaded

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See also: arbitrary, contentious, contumacious, disobedient, fractious, froward, intractable, opposite, petulant, restive, sinister, unruly, unyielding, vicious