94 entries under severe topic. ×

65
hazardous(adjective, difficult, delicate, awful)
48
risky(noun, adjective, adverb, open)
39
perilous(adjective, adverb, open, difficult)
30
harmful(adjective, bad, offensive, awful)
22
serious(adjective, help, bad, great)
22
threatening(adjective, strong, hard, tough)
21
chancy(noun, adjective, adverb, open)
19
treacherous(adjective, hard, evil, rough)
19
grave(adjective, help, great, tough)
17
menacing(adjective, strong, tough, intense)
12
ugly(adjective, bad, hard, tough)
12
unhealthy(adjective, delicate, awful, terrible)
10
wicked(adjective, harsh, delicate, unpleasant)
9
injurious(adjective, bad, offensive, awful)
9
grievous(adjective, help, great, tough)
8
acute(adjective, important, significant, serious)
8
desperate(adjective, awful, significant, extreme)
7
terrible(adjective, bad, strong, hard)
7
venomous(adjective, bad, strong, evil)
6
difficult(noun, adjective, hard, tough)
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APASmart Define. (2016). dangerous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/dangerous/thesaurus/synonyms
ChicagoSmart Define. 2016. "dangerous thesaurus" https://smartdefine.org/dangerous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, dangerous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/dangerous/thesaurus/synonyms>.
MLASmart Define. "dangerous thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/dangerous/thesaurus/synonyms>