- Definitions|2
- Thesaurus|947
- Abbreviations|0
| hush-hush(quiet, dishonest, cunning, secret, clandestine) | |
| iffy(shaky, unlikely, unpromising) | |
| ignoble | |
| ignorant | |
| ill-bred | |
| illegal(adjective, bad, wrong, corrupt, dishonest) | |
| illusory(mean, smooth, false, misleading, sly) | |
| impugnable(shaky, unlikely, unpromising) | |
| in ambush(expression, clandestine, underground, undisclosed) | |
| incognito(clandestine, underground, undisclosed) | |
| inconclusive(shaky, unlikely, unpromising) | |
| indefinite(shaky, unlikely, unpromising) | |
| indeterminate(shaky, unlikely, unpromising) | |
| indistinct(shaky, unlikely, unpromising) | |
| insecure(shaky, untrustworthy, unlikely, unpromising, shifty) | |
| inside(clandestine, underground, undisclosed) | |
| intentionally untrue | |
| intriguing(quiet, mean, smooth, cunning, sly) | |
| inventive | |
| invertebrate |
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| APA | Smart Define. (2015). sneaky thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sneaky/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "sneaky thesaurus" https://smartdefine.org/sneaky/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, sneaky thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sneaky/thesaurus/synonyms>. |
| MLA | Smart Define. "sneaky thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/sneaky/thesaurus/synonyms> |