12
disgustful(adjective, taste, awful, terrible, horrible)
12
grisly(adjective, evil, nasty, plain, unpleasant)
12
lurid(adjective, taste, awful, terrible, endured)
12
soiled(adjective, dull, bad, flat, nasty)
12
tarnish(verb, cut, hurt, catch, harm)
12
unappetizing(adjective, dull, bad, offensive, disgusting)
12
unsavoury(adjective, taste, awful, terrible, horrible)
11
congest(verb, action, hinder, doing dirty)
11
contaminated(adjective, nasty, offensive, unpleasant, violent)
11
defiled(adjective, nasty, dirty, coarse, vile)
11
entangle(verb, action, order, disorder, disturb)
11
feculent(adjective, feature, bad, spoil, dark)
11
grubby(adjective, dull, bad, flat, nasty)
11
horrendous(adjective, feature, bad, awful, negative)
11
icky(adjective, bad, nasty, offensive, unpleasant)
11
pornographic(adjective, offensive, society, sex, obscene)
11
smear(verb, hurt, disorder, ruin, catch)
11
spoil(verb, cut, hurt, disorder, ruin)
11
wretched(adjective, good, nasty, base, dirty)
10
afoul(adjective, adverb, feature, bad, spoil)
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APASmart Define. (2016). foul thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/foul/thesaurus/synonyms
ChicagoSmart Define. 2016. "foul thesaurus" https://smartdefine.org/foul/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, foul thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/foul/thesaurus/synonyms>.
MLASmart Define. "foul thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/foul/thesaurus/synonyms>