127 entries under foul topic. ×

7
obnoxious(adjective, bad, offensive, gross)
7
repellent(adjective, bad, offensive, disgusting)
7
repugnant(adjective, bad, offensive, disgusting)
7
repulsive(adjective, bad, offensive, vile)
7
sickening(adjective, bad, offensive, disgusting)
6
bad(adjective, evil, offensive, corrupt)
6
gamy(adjective, bad, musty, pungent)
6
musty(adjective, strong, offensive, sweet)
6
nauseous(adjective, strong, offensive, sweet)
6
odious(adjective, bad, offensive, revolting)
6
reeking(adjective, strong, offensive, sweet)
6
strong(adjective, offensive, sweet, corrupt)
5
awful(adjective, bad, offensive, disgusting)
5
high(adjective, bad, musty, pungent)
5
objectionable(adjective, bad, offensive, revolting)
5
pestilential(adjective, bad, evil, offensive)
4
filthy(adjective, bad, offensive, revolting)
4
fusty(adjective, bad, rotten, pungent)
4
poison(adjective, help, bad, evil, offensive)
4
stale(adjective, strong, offensive, sweet, corrupt)
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APASmart Define. (2015). mephitic thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/mephitic/thesaurus/synonyms
ChicagoSmart Define. 2015. "mephitic thesaurus" https://smartdefine.org/mephitic/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, mephitic thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/mephitic/thesaurus/synonyms>.
MLASmart Define. "mephitic thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/mephitic/thesaurus/synonyms>