WordNet (r) 3.0 (2006):

ornery
    adj 1: having a difficult and contrary disposition; "a
           cantankerous and venomous-tongued old lady"- Dorothy
           Sayers [syn: cantankerous, crotchety, ornery]

Moby Thesaurus II by Grady Ward, 1.0:

90 Moby Thesaurus words for "ornery":
   aureate, baleful, balky, base, bearish, bitchy, bombastic, breachy,
   cankered, cantankerous, churlish, common, consonant, contrary,
   contumacious, crabbed, cranky, cross, cross-grained, crotchety,
   crusty, cussed, declamatory, defiant, difficult, disagreeable,
   euphuistic, excitable, feisty, flowery, fractious, froward,
   grandiloquent, harmful, hateful, huffish, huffy,
   impatient of control, iniquitous, invidious, irascible, irritable,
   loud, magniloquent, malefic, maleficent, malicious, malign,
   malignant, mean, nasty, noxious, obstreperous, oratorical, orotund,
   paltry, perverse, plangent, poor, recalcitrant, refractory,
   resounding, restive, ringing, rotund, round, rubbishy, shoddy,
   sleazy, snappish, sonorous, spiteful, spleeny, splenetic,
   stentorian, stuffy, sulky, sullen, tatty, testy, ugly, unruly,
   vibrant, vinegarish, vinegary, waspish, wayward, wicked, wild,
   wrongheaded