7
unsociable(adjective, upset, tough, harsh, coarse)
6
forbidding(adjective, severe, evil, rough, nasty)
6
menacing(adjective, unpleasant, horrible, hostile, disagreeable)
6
scowling(adjective, evil, rough, nasty, dark)
6
silent(adjective, upset, irritable, brooding)
5
abrupt(adjective, grumpy, bad-tempered, gruff, brusque)
5
brusque(adjective, tough, harsh, gloomy, depressed)
5
chapfallen(blue, low, melancholy, miserable, depressed)
5
choleric(adjective, low, gloomy, miserable, short)
5
curmudgeonly(adjective, abrupt, gruff, brusque)
5
curt(adjective, cross, rude, coarse, short)
5
disagreeable(adjective, mean, rough, nasty, dark)
5
discourteous(rude, coarse, grumpy, abrupt, malevolence)
5
disgruntled(adjective, upset, hurt, cross, unhappy)
5
dispirited(adjective, low, gloomy, melancholy, miserable)
5
dogged
5
dusky(adjective, sad, dark, sorrow, depression)
5
gaunt(adjective, sorrow, depress, sadness, emotion)
5
gray(adjective, sorrow, depress, sadness, emotion)
5
leaden(adjective, dull, slow, dark, heavy)
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APASmart Define. (2016). sullen thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sullen/thesaurus/synonyms
ChicagoSmart Define. 2016. "sullen thesaurus" https://smartdefine.org/sullen/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, sullen thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sullen/thesaurus/synonyms>.
MLASmart Define. "sullen thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/sullen/thesaurus/synonyms>