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33 entries under underhanded topic. ×

1
clandestine(adjective, dishonest, cunning, deceitful, secret)
1
concealed(dishonest, cunning, deceitful, hidden, fraudulent)
1
crafty(dishonest, cunning, deceitful, sneaky)
1
crooked(dishonest, cunning, deceitful, sneaky)
1
deceptive(dishonest, cunning, deceitful, crooked, sneaky)
1
devious(dishonest, cunning, deceitful, crooked, sneaky)
1
dishonest(cunning, deceitful, fickle, untrustworthy, crooked)
1
dishonorable(dishonest, cunning, deceitful, crooked, sneaky)
1
double-crossing(dishonest, cunning, deceitful, fickle, crooked)
1
fraudulent(dishonest, cunning, deceitful, hidden, sly)
1
furtive(dishonest, cunning, deceitful, hidden, fraudulent)
1
guileful(dishonest, cunning, deceitful, sneaky)
1
indirect(dishonest, cunning, deceitful, crooked, sneaky)
1
oblique(dishonest, cunning, deceitful, crooked, sneaky)
1
secret(dishonest, cunning, deceitful, sneaky)
1
secretive(dishonest, cunning, deceitful, sneaky)
1
shady(dishonest, cunning, deceitful, crooked, sneaky)
1
shifty(dishonest, cunning, deceitful, sneaky)
1
slippery(dishonest, cunning, deceitful, crooked, sneaky)
1
sly(dishonest, cunning, deceitful, fraudulent, sneaky)
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APASmart Define. (2015). on the quiet thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/on_the_quiet/thesaurus/synonyms
ChicagoSmart Define. 2015. "on the quiet thesaurus" https://smartdefine.org/on_the_quiet/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, on the quiet thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/on_the_quiet/thesaurus/synonyms>.
MLASmart Define. "on the quiet thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/on_the_quiet/thesaurus/synonyms>