57 entries under adjective topic. ×

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against the law(expression, idiom, dishonest, illegitimate)
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bigamous(fickle, untrustworthy, unprincipled, polygamous)
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black-market(immoral, improper, illegitimate)
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bootleg
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clandestine(immoral, improper, illicit)
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criminal(bigamous, polygamous)
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dirty
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disgusting
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fast
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fast and loose
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illegal(bigamous, polygamous)
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improper(immoral, illicit)
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polygamous(fickle, untrustworthy, unprincipled, bigamous)
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spurious
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unlawful
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unsporting
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unsportsmanlike
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APASmart Define. (2015). adulterous thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/adulterous/thesaurus/synonyms
ChicagoSmart Define. 2015. "adulterous thesaurus" https://smartdefine.org/adulterous/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, adulterous thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/adulterous/thesaurus/synonyms>.
MLASmart Define. "adulterous thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/adulterous/thesaurus/synonyms>