199 entries under adjective topic. ×

25
furtive(mean, smooth, smart, dishonest)
23
sly(sharp, informal, dishonest, cunning)
22
deceitful(mean, smooth, smart, false)
22
dishonest(mean, bad, smooth, wrong)
21
sneaky(mean, bad, smooth, wrong)
19
crooked(mean, bad, smooth, wrong)
19
insidious(false, dishonest, cunning, deceitful)
18
clandestine(deceitful, secret, sly, sneaky)
18
devious(honest, corrupt, dishonest, cunning)
17
treacherous(mean, smooth, smart, false)
16
crafty(mean, smooth, keen, sharp)
16
cunning(mean, smooth, keen, sharp)
16
surreptitious(dishonest, deceitful, secret, sly)
16
wily(mean, smooth, keen, sharp)
15
shifty(mean, smooth, smart, honest)
15
tricky(mean, smooth, keen, sharp)
14
secret(dishonest, deceitful, hidden, sly)
13
artful(sharp, intelligent, cunning, clever)
13
stealthy(quiet, dishonest, cunning, deceitful)
13
underhanded(honest, false, dishonest, cunning)
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APASmart Define. (2015). underhand thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/underhand/thesaurus/synonyms
ChicagoSmart Define. 2015. "underhand thesaurus" https://smartdefine.org/underhand/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, underhand thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/underhand/thesaurus/synonyms>.
MLASmart Define. "underhand thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/underhand/thesaurus/synonyms>