44 entries under underhand topic. ×

1
double-crossing(adjective, dishonest, cunning, changeable, fickle)
1
fraudulent
1
furtive
1
oblique
1
on the QT(expression, adjective, idiom, dishonest, cunning)
1
on the quiet(expression, adjective, idiom, dishonest, cunning)
1
secret
1
secretive
1
shady
1
sly(adjective, informal)
1
sneaking(adjective, dishonest, cunning, changeable, indecisive)
1
stealthy
1
sub-rosa(adjective, dishonest, cunning, fickle, untrustworthy)
1
surreptitious
1
two-timing(adjective, dishonest, cunning, changeable, fickle)
1
unfair
1
unjust
1
unscrupulous
1
wily
0
dishonorable
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APASmart Define. (2015). lubricious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/lubricious/thesaurus/synonyms
ChicagoSmart Define. 2015. "lubricious thesaurus" https://smartdefine.org/lubricious/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, lubricious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/lubricious/thesaurus/synonyms>.
MLASmart Define. "lubricious thesaurus" 25 June 2015. Web. 27 September 2026. <https://smartdefine.org/lubricious/thesaurus/synonyms>