4
foul up(verb, expression, bad, fail, spoil)
3
become rotten(verb, bad, rude, mistake)
3
contagious(adjective, bad, rude, mistake)
3
deadly(adjective, bad, rude, mistake)
3
dirty(adjective, bad, rude, mistake)
3
disgusting(adjective, bad, rude, mistake)
3
fetid(adjective, bad, rude, mistake)
3
filthy(adjective, bad, rude, mistake)
3
flat(adjective, bad, rude, mistake)
3
foul ball(noun, expression, bad, sport, spoil)
3
foully(adjective, bad, spoil, sin)
3
loathsome(adjective, bad, spoil, sin)
3
noisome(adjective, bad, spoil, sin)
3
noxious(adjective, bad, spoil, sin)
3
offensive(adjective, bad, spoil, sin)
3
pestilential(adjective, bad, spoil, sin)
3
poisonous(adjective, bad, spoil, sin)
3
putrid(adjective, bad, spoil, sin)
3
squalid(adjective, bad, spoil, sin)
3
stale(adjective, bad, spoil, sin)
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APASmart Define. (2016). foul thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/foul/thesaurus/narrower
ChicagoSmart Define. 2016. "foul thesaurus" https://smartdefine.org/foul/thesaurus/narrower (accessed September 23, 2026).
HarvardSmart Define 2016, foul thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/foul/thesaurus/narrower>.
MLASmart Define. "foul thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/foul/thesaurus/narrower>