530 entries under verb topic. ×

25
dirty(adjective, soiled, unclean, bad)
19
corrupt(adjective, mean, bad, hurt)
19
befoul(disorder, ruin, catch, spoil)
19
profane(adjective, offensive, dirty, wicked)
18
defile(noun, hurt, catch, clean)
18
stain(hurt, catch, harm, spoil)
18
taint(ruin, catch, spoil, dirty)
17
pollute(hurt, disorder, ruin, catch)
17
contaminate(catch, clean, spoil, dirty)
17
soil(noun, hurt, disorder, ruin)
17
muddy(adjective, upset, hurt, harm)
16
sully(hurt, catch, spoil, dirty)
15
besmirch(hurt, disorder, ruin, catch)
15
choke(catch, hinder, dirty, polluted)
15
clog(action, catch, hinder, spoil)
13
smudge(catch, spoil, dirty, stain)
12
tarnish(cut, hurt, catch, harm)
11
congest(action, hinder, doing dirty)
11
entangle(action, order, disorder, disturb)
11
smear(hurt, disorder, ruin, catch)
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APASmart Define. (2016). foul thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/foul/thesaurus/synonyms
ChicagoSmart Define. 2016. "foul thesaurus" https://smartdefine.org/foul/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, foul thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/foul/thesaurus/synonyms>.
MLASmart Define. "foul thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/foul/thesaurus/synonyms>