1,192 entry under adjective topic. ×

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unseemly(rude, society, sex, crude)
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unwholesome(mean, bad, wrong, blue)
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amoral(feature, bad, awful, wicked)
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below the belt(expression, idiom, adverb, nastily)
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caught(feature, state, bad, awful)
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criminal(evil, cruel, wicked, unreasonable)
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cruddy(bad, nasty, dirty, sloppy)
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dangerous(bad, offensive, violent, wild)
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dishonorable(mean, bad, spoil, offensive)
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egregious(bad, wrong, evil, offensive)
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foul-smelling(spot, dirty, rotten, obscenity)
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fraudulent(corrupt, dishonest, immoral, rotten)
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frowzy(bad, rank, dirty, mistake)
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gamy(rank, corrupt, disagreeable, sour)
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harrowing(noun, feature, bad, awful)
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hellish(bad, evil, taste, offensive)
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ill-scented(feature, bad, spot, awful)
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indecorous(feature, bad, rude, awful)
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macabre(feature, bad, awful, endured)
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miasmic(strong, offensive, sweet, rotten)
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APASmart Define. (2016). foul thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/foul/thesaurus/synonyms
ChicagoSmart Define. 2016. "foul thesaurus" https://smartdefine.org/foul/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, foul thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/foul/thesaurus/synonyms>.
MLASmart Define. "foul thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/foul/thesaurus/synonyms>