67 entries under harmful topic. ×

65
hazardous(adjective, severe, difficult, delicate, awful)
48
risky(noun, adjective, adverb, open, severe)
39
perilous(adjective, adverb, open, severe, difficult)
21
chancy(noun, adjective, adverb, open, severe)
19
treacherous(adjective, hard, severe, evil, rough)
17
poisonous(adjective, bad, offensive, violent, wild)
17
destructive(adjective, bad, deadly, fatal)
14
bad(adjective, evil, offensive, violent, heavy)
12
pernicious(adjective, bad, offensive, foul, disgusting)
12
unhealthy(adjective, severe, delicate, awful, terrible)
11
deadly(adjective, bad, heavy, foul)
10
wicked(adjective, severe, harsh, delicate, unpleasant)
9
injurious(adjective, bad, severe, offensive, awful)
9
deleterious(adjective, bad, offensive, foul)
9
noxious(adjective, bad, evil, offensive, cruel)
9
damaging(adjective, bad, tough, evil, offensive)
7
evil(adjective, bad, hard, rough, nasty)
7
baneful(adjective, offensive, foul, disgusting)
7
detrimental(adjective, bad, cruel, unkind, distressing)
7
foul(adjective, bad, offensive, violent, wild)
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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>