1
hush-hush(quiet, dishonest, cunning, secret, clandestine)
1
iffy(shaky, unlikely, unpromising)
1
ignoble
1
ignorant
1
ill-bred
1
illegal(adjective, bad, wrong, corrupt, dishonest)
1
illusory(mean, smooth, false, misleading, sly)
1
impugnable(shaky, unlikely, unpromising)
1
in ambush(expression, clandestine, underground, undisclosed)
1
incognito(clandestine, underground, undisclosed)
1
inconclusive(shaky, unlikely, unpromising)
1
indefinite(shaky, unlikely, unpromising)
1
indeterminate(shaky, unlikely, unpromising)
1
indistinct(shaky, unlikely, unpromising)
1
insecure(shaky, untrustworthy, unlikely, unpromising, shifty)
1
inside(clandestine, underground, undisclosed)
1
intentionally untrue
1
intriguing(quiet, mean, smooth, cunning, sly)
1
inventive
1
invertebrate
<1678910>
11 years ago|10k views|share |citing 
APASmart Define. (2015). sneaky thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sneaky/thesaurus/synonyms
ChicagoSmart Define. 2015. "sneaky thesaurus" https://smartdefine.org/sneaky/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, sneaky thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sneaky/thesaurus/synonyms>.
MLASmart Define. "sneaky thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/sneaky/thesaurus/synonyms>