1
crooked(mean, smooth, dishonest, cunning, deceitful)
1
curious(strange, unknown, concealed, inexplicable, unexplained)
1
delusive(adjective, mean, smooth, smart, false)
1
difficult
1
discreet(close, clandestine, underground, undisclosed)
1
dishonorable(mean, smooth, dishonest, cunning, deceitful)
1
disingenuous
1
dissembled(close, secret, hidden, clandestine, underground)
1
dissimulated(close, clandestine, underground, undisclosed)
1
doggo
1
double-dealing(adjective, mean, smooth, cunning, knowing)
1
duplicitous(dishonest, cunning, deceitful, dubious, suspicious)
1
enigmatic(adjective, strange, mysterious, reticent, unknown)
1
enigmatical(obscure, strange, unknown, clandestine, underground)
1
equivocal(strange, unknown, curious, concealed, inexplicable)
1
falsehearted
1
finagling
1
fly-by-night(adjective, dishonest, deceitful, dubious, unpredictable)
1
furacious
1
furan
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APASmart Define. (2015). furtive thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/furtive/thesaurus/synonyms
ChicagoSmart Define. 2015. "furtive thesaurus" https://smartdefine.org/furtive/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, furtive thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/furtive/thesaurus/synonyms>.
MLASmart Define. "furtive thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/furtive/thesaurus/synonyms>