- Definitions|2
- Thesaurus|1.9k
- Abbreviations|0
| fast | |
| fast and loose(expression, adjective, idiom, dishonest, immoral) | |
| feline | |
| finagling | |
| fixed(adjective, dishonest, immoral, rotten, untrustworthy) | |
| forbidden(adjective, unreasonable, improper, excessive, unwarranted) | |
| forsworn(adjective, mean, bad, evil, base) | |
| gone to the dogs(expression, adjective, idiom, dishonest, immoral) | |
| hidden(secret, clandestine, underground, undisclosed, sneaky) | |
| hidlings | |
| hush-hush(dishonest, cunning, deceitful, hidden, clandestine) | |
| ill-got | |
| ill-gotten | |
| illegal(adjective, corrupt, unreasonable, dishonest, immoral) | |
| illicit | |
| improper(adjective, corrupt, unreasonable, dishonest, deceitful) | |
| in ambush(expression, clandestine, underground, undisclosed) | |
| incognito(secret, hidden, clandestine, underground, undisclosed) | |
| inconstant(adjective, dishonest, immoral, unpredictable, rotten) | |
| inept(adjective, unreasonable, improper, unwarranted, unnecessary) |
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| APA | Smart Define. (2016). underhanded thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/underhanded/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "underhanded thesaurus" https://smartdefine.org/underhanded/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, underhanded thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/underhanded/thesaurus/synonyms>. |
| MLA | Smart Define. "underhanded thesaurus" 22 January 2016. Web. 22 September 2026. <https://smartdefine.org/underhanded/thesaurus/synonyms> |