93 entries under adjective topic. ×

3
unrevealed(secret, unknown, hidden, underground)
2
cautious(sneaky, covert, secretive)
2
designing(mean, smooth, deceitful, tricky)
2
dishonest(mean, smooth, cunning, deceitful)
2
double-dealing(mean, smooth, dishonest, deceitful)
2
foxy(mean, dishonest, deceitful, sly)
2
illegal
2
illicit
2
irregular
2
jumbled
2
personal
2
subreptitious
1
insincere
1
lubricious
1
misleading
1
not for publication
1
off the record
1
on the QT(expression, idiom, dishonest, cunning)
1
plotting(mean, smooth, sly)
1
slick(mean, smooth, sly)
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APASmart Define. (2015). surreptitious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/surreptitious/thesaurus/synonyms
ChicagoSmart Define. 2015. "surreptitious thesaurus" https://smartdefine.org/surreptitious/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, surreptitious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/surreptitious/thesaurus/synonyms>.
MLASmart Define. "surreptitious thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/surreptitious/thesaurus/synonyms>