72 entries under obnoxious topic. ×

6
morose(adjective, rough, nasty, sad, dark)
6
saturnine(adjective, rough, nasty, dark, unpleasant)
6
sorry(adjective, sad, unhappy, unpleasant, sorrow)
6
vile(adjective, mean, bad, wrong, evil)
5
grave(adjective, unpleasant, sorrow, depress, sadness)
5
horrible(adjective, obscure, nasty, dark, unpleasant)
5
scandalous(adjective, unpleasant, corrupt, wicked, horrible)
5
terrible(adjective, appearance, evil, unpleasant, awful)
4
nasty(adjective, evil, rough, dark, unpleasant)
4
dreadful(adjective, nasty, unpleasant, awful, terrible)
4
odious(adjective, person, tough, offensive, dark)
4
shocking(adjective, appearance, offensive, unpleasant, awful)
4
unpleasant(adjective, person, mean, hard, severe)
3
offensive(adjective, bad, tough, evil, dark)
3
repellent(adjective, tough, evil, offensive, dark)
3
troublous(adjective, hard, severe, offensive, unpleasant)
2
despicable(adjective, unpleasant, horrible, disagreeable, dreadful)
2
dirty(adjective, nasty, unpleasant, vicious, wicked)
2
disagreeable(adjective, person, hard, severe, rough)
2
fell(adjective, unpleasant, horrible, disagreeable, dreadful)
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APASmart Define. (2016). sinister thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sinister/thesaurus/synonyms
ChicagoSmart Define. 2016. "sinister thesaurus" https://smartdefine.org/sinister/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, sinister thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sinister/thesaurus/synonyms>.
MLASmart Define. "sinister thesaurus" 3 April 2016. Web. 25 September 2026. <https://smartdefine.org/sinister/thesaurus/synonyms>