62 entries under foul topic. ×

15
polluted(verb, adjective, nasty, offensive, unpleasant)
14
dirty(adjective, nasty, offensive, unpleasant, violent)
8
unclean(adjective, nasty, offensive, unpleasant, dirty)
7
defiled(verb, adjective, nasty, dirty, coarse)
7
soiled(verb, adjective, nasty, dishonest)
6
fouled(verb, adjective, nasty, dirty)
6
stained(verb, adjective, nasty, sloppy)
6
sullied(verb, adjective, nasty, offensive, unpleasant)
6
unhealthy(adjective, rank, dirty, disagreeable)
6
unhygienic(adjective, nasty, dirty, sloppy)
6
unsanitary(adjective, nasty, dirty, sloppy)
5
filthy(adjective, nasty, offensive, unpleasant, dirty)
4
tarnished(verb, adjective, dirty, polluted)
4
unhealthful(adjective, dirty, unhealthy, unclean)
4
unwashed(adjective, nasty, dirty, sloppy)
3
muddy(adjective, nasty, dirty, sloppy)
3
nasty(adjective, offensive, unpleasant, violent, wild)
3
squalid(adjective, nasty, offensive, unpleasant, dirty)
2
begrimed(verb, adjective, nasty, sloppy)
2
dusty(adjective, nasty, dirty, sloppy)
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APASmart Define. (2015). contaminated thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/contaminated/thesaurus/synonyms
ChicagoSmart Define. 2015. "contaminated thesaurus" https://smartdefine.org/contaminated/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, contaminated thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/contaminated/thesaurus/synonyms>.
MLASmart Define. "contaminated thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/contaminated/thesaurus/synonyms>