135 entries under foul topic. ×

14
indelicate(adjective, bad, nasty, offensive, rude)
13
improper(adjective, dirty, raw, nasty, offensive)
13
loathsome(adjective, good, bad, blue, evil)
13
mucky(adjective, dull, flat, nasty, offensive)
13
obnoxious(adjective, good, bad, taste, nasty)
13
raunchy(adjective, bad, blue, slang, nasty)
13
repulsive(adjective, bad, evil, nasty, offensive)
13
revolting(adjective, bad, evil, taste, offensive)
12
grubby(adjective, dull, bad, flat, clean)
11
grungy(adjective, nasty, dirty, sloppy)
11
immoral(adjective, blue, evil, nasty, offensive)
11
odious(adjective, good, bad, taste, offensive)
11
slovenly(adjective, nasty, base, dirty)
10
abominable(adjective, good, evil, nasty, offensive)
10
erotic(adjective, society, sex, sexy, metters)
10
lousy(adjective, good, bad, nasty, offensive)
10
muddy(adjective, nasty, dark, gloomy, dirty)
10
naughty(adjective, society, sex, obscene, metters)
10
polluted(adjective, bad, nasty, offensive, unpleasant)
10
sloppy(adjective, dull, flat, nasty, gloomy)
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APASmart Define. (2015). filthy thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/filthy/thesaurus/synonyms
ChicagoSmart Define. 2015. "filthy thesaurus" https://smartdefine.org/filthy/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, filthy thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/filthy/thesaurus/synonyms>.
MLASmart Define. "filthy thesaurus" 17 July 2015. Web. 26 September 2026. <https://smartdefine.org/filthy/thesaurus/synonyms>