68 entries under terrible topic. ×

65
hazardous(adjective, severe, difficult, delicate, awful)
48
risky(noun, adjective, adverb, open, severe)
39
perilous(adjective, adverb, open, severe, difficult)
30
harmful(adjective, bad, severe, offensive, awful)
22
threatening(adjective, strong, hard, tough, severe)
21
chancy(noun, adjective, adverb, open, severe)
19
treacherous(adjective, hard, severe, evil, rough)
17
menacing(adjective, strong, tough, severe, intense)
16
severe(adjective, help, bad, hard, tough)
12
ugly(adjective, bad, hard, tough, severe)
12
unhealthy(adjective, severe, delicate, awful)
10
wicked(adjective, severe, harsh, delicate, unpleasant)
9
injurious(adjective, bad, severe, offensive, awful)
7
venomous(adjective, bad, strong, severe, evil)
6
difficult(noun, adjective, hard, tough, severe)
6
unsound(adjective, severe, delicate, awful)
5
fell(adjective, strong, tough, severe, intense)
5
vicious(adjective, bad, strong, hard, wrong)
4
malign(adjective, strong, hard, severe, evil)
3
ferocious(adjective, strong, hard, severe, rough)
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APASmart Define. (2016). dangerous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/dangerous/thesaurus/synonyms
ChicagoSmart Define. 2016. "dangerous thesaurus" https://smartdefine.org/dangerous/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, dangerous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/dangerous/thesaurus/synonyms>.
MLASmart Define. "dangerous thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/dangerous/thesaurus/synonyms>