93 entries under adjective topic. ×

4
shifty(mean, smooth, dishonest, cunning)
4
sidelong
4
slinking(secret, sneaky, covert, secretive)
4
slippery(dishonest, cunning, deceitful, sly)
4
supposititious(deception, untruth)
4
treacherous(mean, smooth, dishonest, cunning)
4
ulterior
4
wily(mean, smooth, dishonest, cunning)
3
closet(noun, secret, clandestine, underground)
3
conspiratorial(clandestine, underground, undisclosed, sneaky)
3
deceptive(mean, smooth, dishonest, cunning)
3
disorderly
3
fictitious
3
mysterious(quiet, secret, unknown, hidden)
3
mystical(secret, unknown, hidden, underground)
3
on the sly(expression, idiom, secret, sneaky)
3
spurious
3
sub-rosa(dishonest, cunning, secret, clandestine)
3
unavowed
3
under wraps(expression, dishonest, secret, hidden)
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APASmart Define. (2015). surreptitious thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/surreptitious/thesaurus/synonyms
ChicagoSmart Define. 2015. "surreptitious thesaurus" https://smartdefine.org/surreptitious/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, surreptitious thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/surreptitious/thesaurus/synonyms>.
MLASmart Define. "surreptitious thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/surreptitious/thesaurus/synonyms>