Synonyms of sullen

1 Syllable

gruff, mean, glum, cross, sour, dour, dull, grim

2 Syllables

tetchier, crabbier, grumpy, gloomy, crabby, huffy, moody, surly, smoggiest, inert, dourer, angry, chuffy, cloudier, waspy, huffish, dismal, crabbed, sulky, grousing, fretful, peevish, stubborn, angrier, mumpish, whiny, gruffer, angriest, putout, broody, chuffier, roily, cloudy, cheerless, testy, crosser, cloudiest, pouting, pouty, sulking, sluggish, moodier, frowning, ennuied, fed-up, put-out, somber, testier, heavy, silent, churlish, tetchy, smoggy, grimmer, huffier, morbid, mooney, gruffest, grumpier, grimmest, surlier, ugly, malign, uptight

3 Syllables

hostile, petulant, malicious, ornery, truculent, cynical, glowering, sourpussed, tenebrous, unsated, splenetic, disgruntled, morose, querulous, perverse

4 Syllables

ill-natured, saturnine, bad-tempered, ill-humored, dissatisfied, pessimistic, drearisome, emulsified, fatalistic, impolite, perversive, tenebrific, unsociable, irritable, unappeased, unassuaged, tempersome, malevolent, sleepyheaded, obstinate