108 entries under foul topic. ×

8
stinking(adjective, bad, evil, offensive, base)
8
unhealthful(adjective, offensive, disgusting, injurious)
6
corrupt(adjective, bad, evil, base)
6
gross(adjective, mean, bad, nasty, offensive)
6
horrid(adjective, bad, evil, offensive, base)
6
wicked(adjective, mean, bad, wrong, evil)
6
yucky(adjective, bad, offensive, awful, dirty)
5
icky(adjective, bad, offensive, awful, dirty)
5
obscene(adjective, bad, offensive, revolting)
5
strong(adjective, rank, corrupt, disgusting)
4
funky(adjective, bad, musty, pungent)
4
ghastly(adjective, bad, offensive, deep)
4
hateful(adjective, mean, bad, wrong, evil)
4
malicious(adjective, mean, bad, wrong, evil)
4
musty(adjective, bad, rank, disagreeable)
4
painful(adjective, bad, offensive, revolting)
4
polluted(adjective, bad, offensive, rank)
4
reeking(adjective, bad, offensive, rank)
4
sickly(adjective, offensive, disgusting, harmful)
4
smelly(adjective, rank, disagreeable, sour)
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APASmart Define. (2015). noxious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/noxious/thesaurus/synonyms
ChicagoSmart Define. 2015. "noxious thesaurus" https://smartdefine.org/noxious/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, noxious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/noxious/thesaurus/synonyms>.
MLASmart Define. "noxious thesaurus" 17 July 2015. Web. 27 September 2026. <https://smartdefine.org/noxious/thesaurus/synonyms>