74 entries under foul topic. ×

48
damaging(adjective, mean, bad, wrong, severe)
43
injurious(adjective, person, help, mean, bad)
42
detrimental(adjective, help, mean, bad, wrong)
33
deleterious(adjective, help, mean, bad, wrong)
31
hurtful(adjective, help, mean, bad, wrong)
29
noxious(adjective, mean, bad, wrong, evil)
25
bad(adjective, person, help, mean, wrong)
21
evil(adjective, help, mean, bad, wrong)
21
ruinous(adjective, mean, bad, wrong, evil)
19
dangerous(adjective, bad, severe, offensive, awful)
16
unhealthy(adjective, offensive, disgusting, injurious)
16
unwholesome(adjective, offensive, unpleasant, disgusting)
15
poisonous(adjective, bad, evil, offensive, cruel)
14
mischievous(adjective, help, offensive, negative)
10
painful(adjective, bad, severe, offensive, awful)
9
nasty(adjective, person, bad, evil, offensive)
9
insalubrious(adjective, offensive, unpleasant, disgusting)
9
noisome(adjective, bad, evil, offensive)
8
hostile(adjective, person, mean, bad, wrong)
6
unhealthful(adjective, offensive, disgusting, injurious)
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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>