ill-natured

adj

1. unkindly, unamiable, unfriendly, unaccommodating; quarrelsome, contentious, fractious, captious; hostile, antagonistic, inimical, ill-willed; spiteful, malicious, malevolent, hateful.

2. ill-tempered, ill-humored, cross, irascible, choleric, splenetic; crabby, crabbed, cranky, grouchy, grumpy, cantankerous, crotchety, crusty; irritable, touchy, testy, thin-skinned, waspish, peevish, petulant; moody, sulky, sullen, dour, gloomy, sullen, morose; bitter, acrimonious, acerbic, sour, caustic, tart, churlish, surly.