73 entries under horrible topic. ×

61
threatening(adjective, person, mean, bad, wrong)
43
sinister(adjective, person, appearance, mean, bad)
31
menacing(adjective, person, unpleasant, awful, feelings)
21
gloomy(adjective, hard, severe, obscure, dark)
19
forbidding(adjective, person, appearance, dark, unpleasant)
14
dangerous(adjective, unpleasant, heavy, cruel)
12
ugly(adjective, person, unpleasant, awful, heavy)
10
dark(adjective, upset, obscure, sad, unpleasant)
10
angry(adjective, state, characteristic, person, unpleasant)
8
direful(adjective, fearful, foreboding, warn)
8
malevolent(adjective, person, mean, bad, wrong)
7
dour(adjective, person, dark, unpleasant, feelings)
6
evil(adjective, mean, bad, wrong, nasty)
6
mean(adjective, person, harsh, unpleasant, cruel)
6
spiteful(adjective, person, unpleasant, cruel)
4
treacherous(adjective, unpleasant, disagreeable, dreadful)
4
unpleasant(adjective, person, mean, hard, severe)
4
vile(adjective, mean, bad, wrong, evil)
3
dreadful(adjective, evil, nasty, unpleasant, awful)
3
grave(adjective, unpleasant, disagreeable, dreadful)
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APASmart Define. (2016). ominous thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/ominous/thesaurus/synonyms
ChicagoSmart Define. 2016. "ominous thesaurus" https://smartdefine.org/ominous/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, ominous thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/ominous/thesaurus/synonyms>.
MLASmart Define. "ominous thesaurus" 3 April 2016. Web. 29 September 2026. <https://smartdefine.org/ominous/thesaurus/synonyms>