56 entries under dangerous topic. ×

48
damaging(adjective, mean, bad, wrong, severe)
43
injurious(adjective, person, help, mean, bad)
42
detrimental(adjective, help, mean, bad, wrong)
36
destructive(adjective, bad, severe, evil, awful)
29
noxious(adjective, mean, bad, wrong, evil)
26
toxic(adjective, injurious, damaging, deadly)
18
malignant(adjective, bad, injurious, hurtful)
15
poisonous(adjective, bad, evil, offensive, cruel)
14
deadly(adjective, bad, evil, cruel, unkind)
12
fatal(adjective, bad, evil, dreadful)
11
lethal(adjective, bad, evil, risky)
10
nocuous(adjective, cruel, negative, unkind)
9
nasty(adjective, person, bad, evil, offensive)
9
wicked(adjective, bad, corrupt, negative, immoral)
8
risky(adjective, severe, rude, awful, terrible)
8
unsafe(adjective, risky, injurious, damaging)
8
venomous(adjective, bad, evil, injurious)
6
hazardous(adjective, risky, injurious, unsafe)
6
menacing(adjective, risky, threatening, injurious)
5
treacherous(adjective, injurious, detrimental)
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APASmart Define. (2016). harmful thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/harmful/thesaurus/synonyms
ChicagoSmart Define. 2016. "harmful thesaurus" https://smartdefine.org/harmful/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, harmful thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/harmful/thesaurus/synonyms>.
MLASmart Define. "harmful thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/harmful/thesaurus/synonyms>