| unprincipled(adjective, corrupt, dishonest, immoral, deceitful) | |
| untruthful(adjective, false, dishonest, deceitful, dubious) | |
| waggish(adjective, playful, witty, mischievous) | |
| wicked | |
| wise(adjective, smooth, keen, sharp, smart) | |
| Janus-faced | |
| ambidextrous(false, dishonest, deceitful, slick, hypocritical) | |
| art(noun, cunning) | |
| artificial(adjective, cunning) | |
| bluffing(adjective, mean, smooth, cunning, clever) | |
| captious(adjective, mean, smooth, cunning, clever) | |
| catchy(adjective, false, misleading, illusory) | |
| catty | |
| cautious(smart, clever, subtle, artful, sneaky) | |
| chanceful | |
| cheat(noun, verb, slip, hide, steal) | |
| close(clandestine, underground, undisclosed, concealment) | |
| corrupt(adjective, dishonest, immoral, unprincipled) | |
| cunningly(adverb, cunning) | |
| cynical(adjective, sharp, ironic, deadpan, understated) |
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| APA | Smart Define. (2016). sly thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/sly/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sly thesaurus" https://smartdefine.org/sly/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, sly thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/sly/thesaurus/synonyms>. |
| MLA | Smart Define. "sly thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/sly/thesaurus/synonyms> |