70 entries under obnoxious topic. ×

9
base(adjective, evil, offensive, unpleasant, terrible)
9
distasteful(verb, adjective, person, hard, nasty)
9
malevolent(adjective, unpleasant, wicked, horrible, disagreeable)
8
ugly(adjective, severe, unpleasant, awful, terrible)
6
scandalous(adjective, evil, unpleasant, awful, terrible)
6
troublesome(verb, adjective, person, severe, tender)
5
forbidding(adjective, tough, difficult, unpleasant, terrible)
5
mean(adjective, sad, unhappy, unpleasant, awful)
5
menacing(adjective, tough, nasty, unpleasant, awful)
5
nauseous(adjective, unpleasant, disgusting, horrible, disagreeable)
4
grave(adjective, severe, intense, unpleasant, terrible)
4
noisome(adjective, offensive, unpleasant, terrible, vicious)
4
sinister(adjective, nasty, unpleasant, awful, terrible)
3
fell(adjective, unpleasant, fear, horrible, disagreeable)
3
low(adjective, unpleasant, terrible, wicked, horrible)
3
ominous(adjective, evil, nasty, unpleasant, awful)
3
sordid(adjective, unpleasant, wicked, horrible, disagreeable)
2
dangerous(adjective, tough, severe, unpleasant, awful)
2
filthy(adjective, unpleasant, horrible, disagreeable)
2
gloomy(adjective, sad, unhappy, dark, unpleasant)
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APASmart Define. (2016). dreadful thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/dreadful/thesaurus/synonyms
ChicagoSmart Define. 2016. "dreadful thesaurus" https://smartdefine.org/dreadful/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, dreadful thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/dreadful/thesaurus/synonyms>.
MLASmart Define. "dreadful thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/dreadful/thesaurus/synonyms>