The Oxford Thesaurus An A-Z Dictionary of Synonyms - perverseadj.

1) wrong, wrong-headed, awry, contrary, wayward, incorrect, irregular, unfair, improper, contradictory: It was most perverse of you to change your mind after all the arrangements had been made. 2) cantankerous, testy, curmudgeonly, churlish, crusty, bad-tempered, petulant, captious, cross, cross-grained, peevish, waspish, snappish, bilious, splenetic, fractious, ill-tempered, quarrelsome, irascible, sullen, contentious, touchy, obstreperous, crabby, crabbed, irritable, surly, Colloq grouchy, Brit stroppy, US and Canadian cranky: With everything going wrong, Catherine feels particularly perverse today. 3) stubborn, self-willed, wrong-headed, intractable, wilful, obdurate, obstinate, pigheaded, adamant, inflexible, unbending, refractory, unyielding: I refuse to give in to a perverse child just because he has a tantrum.