84 entries under bad topic. ×

10
painful(adjective, severe, offensive, awful)
9
nasty(adjective, person, evil, offensive)
9
noisome(adjective, evil, offensive, foul)
9
sinister(adjective, evil, nasty, injurious)
9
wicked(adjective, corrupt, negative, immoral)
8
hostile(adjective, person, mean, wrong)
8
venomous(adjective, evil, dangerous, injurious)
7
pestiferous(adjective, injurious, damaging, deadly)
5
devastating(adjective, evil, dreadful, injurious)
4
foul(adjective, mean, wrong, evil)
4
antagonistic(adjective, person, mean, wrong)
4
objectionable(adjective, offensive, rude, unpleasant)
4
offensive(adjective, severe, evil, awful)
4
polluted(adjective, offensive, foul, revolting)
4
severe(adjective, offensive, awful, terrible)
3
mortal(adjective, evil, dangerous, injurious)
3
nefarious(corrupt, immoral, sinful, injurious)
3
serious(adjective, offensive, foul, revolting)
2
awful(adjective, severe, offensive, terrible)
2
iniquitous(corrupt, immoral, distressing, sinful)
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APASmart Define. (2016). harmful thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/harmful/thesaurus/synonyms
ChicagoSmart Define. 2016. "harmful thesaurus" https://smartdefine.org/harmful/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, harmful thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/harmful/thesaurus/synonyms>.
MLASmart Define. "harmful thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/harmful/thesaurus/synonyms>