72 entries under obnoxious topic. ×

6
forbidding(adjective, severe, evil, rough, nasty)
6
menacing(adjective, unpleasant, horrible, hostile, disagreeable)
6
scowling(adjective, evil, rough, nasty, dark)
5
disagreeable(adjective, mean, rough, nasty, dark)
5
threatening(adjective, mean, bad, wrong, evil)
5
truculent(adjective, nasty, rude, unpleasant, coarse)
4
evil(adjective, mean, bad, wrong, harsh)
4
grievous(adjective, sad, unpleasant, sorrow, depression)
4
vexatious(adjective, unpleasant, horrible, irritable, disagreeable)
3
spiteful(adjective, mean, rough, nasty, cross)
3
vicious(adjective, unpleasant, horrible, disagreeable, dreadful)
2
bellicose(adjective, mean, sharp, rough, nasty)
2
ominous(adjective, mean, bad, wrong, evil)
2
pugnacious(adjective, mean, sharp, rough, nasty)
2
quarrelsome(adjective, mean, sharp, rough, nasty)
2
rough(adjective, nasty, dark, rude, unpleasant)
2
shocking(adjective, unpleasant, horrible, disagreeable, ugly)
2
treacherous(adjective, rough, nasty, dark, unpleasant)
2
violent(adjective, mean, sharp, harsh, unpleasant)
2
wicked(adjective, mean, bad, wrong, evil)
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APASmart Define. (2016). sullen thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sullen/thesaurus/synonyms
ChicagoSmart Define. 2016. "sullen thesaurus" https://smartdefine.org/sullen/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, sullen thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sullen/thesaurus/synonyms>.
MLASmart Define. "sullen thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/sullen/thesaurus/synonyms>