Synonyms and related words :
bearish, bitchy, cankered, cantankerous, churlish, crabbed, cranky, cross, cross-grained, crusty, cussed, disagreeable, excitable, fractious, huffish, huffy, irascible, irritable, mean, ornery, perverse, snappish, spiteful, spleeny, splenetic, testy, ugly, waspish