97 entries under severe topic. ×

44
menacing(verb, adjective, person, force, strong)
22
dangerous(adjective, strong, hard, tough)
12
gloomy(adjective, hard, obscure, dark)
12
frightening(noun, verb, adjective, person, strong)
12
serious(adjective, bad, unpleasant, heavy)
11
ugly(adjective, person, tough, nasty)
10
grave(adjective, tough, unpleasant, deep)
10
heavy(adjective, bad, weighty, treacherous)
6
creepy(adjective, hard, nasty, offensive)
5
fateful(adjective, weighty, menacing, unfavorable)
5
formidable(adjective, tough, unpleasant, important)
5
stormy(adjective, strong, rough, intense)
4
disturbing(verb, hard, nasty, offensive)
4
hard(adjective, tough, difficult, offensive)
4
horrible(adjective, strong, evil, obscure)
4
unpleasant(adjective, person, mean, hard)
3
grievous(adjective, tough, unpleasant, heavy)
3
laborious(adjective, hard, tough, offensive)
3
strong(adjective, intense, violent, terrible)
2
agitating(verb, hard, offensive, distressing)
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APASmart Define. (2016). threatening thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/threatening/thesaurus/synonyms
ChicagoSmart Define. 2016. "threatening thesaurus" https://smartdefine.org/threatening/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, threatening thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/threatening/thesaurus/synonyms>.
MLASmart Define. "threatening thesaurus" 23 March 2016. Web. 21 September 2026. <https://smartdefine.org/threatening/thesaurus/synonyms>