18
coarse(adjective, vulgar, offensive, rude, vile)
18
defile(noun, verb, hurt, catch, clean)
18
beastly(adjective, adverb, bad, nasty, low)
18
detestable(adjective, good, taste, nasty, offensive)
18
stain(verb, hurt, catch, harm, spoil)
18
frightful(adjective, dull, evil, nasty, awful)
18
lewd(adjective, offensive, vulgar, rude, dirty)
18
mephitic(adjective, bad, strong, offensive, sweet)
18
outrageous(adjective, bad, blue, evil, nasty)
18
taint(verb, ruin, catch, spoil, dirty)
18
villainous(adjective, mean, bad, wrong, evil)
18
yucky(adjective, bad, nasty, offensive, unpleasant)
17
base(noun, adjective, adverb, characteristic, mean)
17
pollute(verb, hurt, disorder, ruin, catch)
17
contaminate(verb, catch, clean, spoil, dirty)
17
monstrous(adjective, adverb, evil, nasty, low)
17
soil(noun, verb, hurt, disorder, ruin)
17
bawdy(adjective, dirty, rude, raw, nasty)
17
blue(adjective, offensive, vulgar, rude, dirty)
17
foetid(adjective, feature, bad, spot, awful)
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APASmart Define. (2016). foul thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/foul/thesaurus/synonyms
ChicagoSmart Define. 2016. "foul thesaurus" https://smartdefine.org/foul/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, foul thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/foul/thesaurus/synonyms>.
MLASmart Define. "foul thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/foul/thesaurus/synonyms>