120 entries under foul topic. ×

6
nauseous(adjective, strong, offensive, sweet)
6
squalid(adjective, poor, nasty, offensive, unpleasant)
6
stenchy(adjective, hard, old, sour)
6
tainted(adjective, offensive, unpleasant, rank, dirty)
5
decayed(adjective, bad, hard, corrupt)
5
feculent(adjective, rank, disgusting, disagreeable)
5
frowzy(adjective, bad, rank, disagreeable)
5
high(adjective, bad, hard, sharp, rank)
5
sour(adjective, hard, rank, corrupt)
4
decomposed(adjective, bad, corrupt, disgusting)
4
horrid(adjective, bad, nasty, offensive, unpleasant)
4
putrescent(adjective, rank, corrupt, disgusting)
4
stinky(adjective, stale, rotten, stinking)
4
yecchy(adjective, offensive, unpleasant, disgusting)
3
evil-smelling(adjective, rank, disagreeable, sour)
3
graveolent(adjective, musty, pungent, stinking)
3
moldy(adjective, strong, offensive, sweet, rank)
3
polluted(adjective, offensive, unpleasant, rank, dirty)
3
pungent(adjective, strong, hard, sharp, offensive)
3
stagnant(adjective, strong, hard, warm, offensive)
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APASmart Define. (2015). fetid thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/fetid/thesaurus/synonyms
ChicagoSmart Define. 2015. "fetid thesaurus" https://smartdefine.org/fetid/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, fetid thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/fetid/thesaurus/synonyms>.
MLASmart Define. "fetid thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/fetid/thesaurus/synonyms>