150 entries under adjective topic. ×

2
subterranean
2
tight-lipped(secret, sneaky, stealthy)
2
under the table(expression, idiom)
1
canny(mean, smooth, cunning, knowing)
1
closet(obscure, unknown, hidden, clandestine)
1
delusive(mean, smooth, smart, false)
1
disingenuous
1
double-dealing(mean, smooth, cunning, knowing)
1
enigmatic(strange, mysterious, reticent, unknown)
1
fly-by-night(dishonest, deceitful, dubious, unpredictable)
1
illegal
1
larcenous
1
noiseless
1
shrewd(mean, smooth, dishonest, cunning)
1
silent(mysterious, private, reticent, taciturn)
1
slick(mean, smooth, false, dishonest)
1
thievish(stealing, thievery)
1
ulterior
1
unreliable(true, unpredictable, fickle, variable)
1
unscrupulous(mean, smooth, dishonest, cunning)
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APASmart Define. (2015). furtive thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/furtive/thesaurus/synonyms
ChicagoSmart Define. 2015. "furtive thesaurus" https://smartdefine.org/furtive/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, furtive thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/furtive/thesaurus/synonyms>.
MLASmart Define. "furtive thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/furtive/thesaurus/synonyms>