1
insoluble(strange, unknown, curious, concealed, inexplicable)
1
intimated
1
kleptomaniacal
1
larcenous(adjective, thievish)
1
magical(strange, unknown, curious, concealed, inexplicable)
1
malevolent
1
malignant
1
move
1
mutely
1
mysteriously
1
mystery
1
mystic(obscure, unknown, clandestine, underground, undisclosed)
1
mystifying
1
necromantic(strange, unknown, curious, concealed, inexplicable)
1
nefarious
1
noiseless
1
obscure(strange, unknown, clandestine, underground, undisclosed)
1
on the QT(expression, idiom, dishonest, secret, reticent)
1
on the quiet(expression, idiom, dishonest, cunning, deceitful)
1
on tiptoe
11 years ago|15k views|share |citing 
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>