TRUCULENT

adj. surly, sullen, bad-tempered, ill-tempered, unpleasant, nasty, obstreperous, rude, unpleasant, ferocious, fierce, savage, feral, barbarous, harsh, scathing, virulent, combative, belligerent, antagonistic, bellicose, hostile, contentious, warlike, violent, pugnacious, Colloq scrappy I don't care enough for this job to endure the boss's truculent attitude a moment longer