89 entries under noun topic. ×
| heel(creep, rake, rogue, scoundrel) | |
| huis clos | |
| humbug | |
| hunch | |
| imp | |
| impostor | |
| inkling | |
| knave | |
| la derobee | |
| la sourdine | |
| louse(creep, rake, rogue, scoundrel) | |
| lout(creep, rake, rogue, scoundrel) | |
| misgiving | |
| mistrust | |
| on the q.t | |
| on the side | |
| or Q.T. | |
| phantom | |
| phoniness(informal, insincerity) | |
| quietly |
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| APA | Smart Define. (2016). sly thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sly/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sly thesaurus" https://smartdefine.org/sly/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, sly thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sly/thesaurus/synonyms>. |
| MLA | Smart Define. "sly thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/sly/thesaurus/synonyms> |