0
cop
0
dangerously
0
disingenuously
0
filch
0
foully
0
insinuatingly
0
lift
0
on the q.t
0
on the side
0
or Q.T.
0
overmuch(adverb, unduly)
0
perfidiously
0
perverse
0
perverted
0
questionably
0
slily
0
sly
0
steal
0
swipe
0
thieving
11 years ago|1.8k views|share |citing 
APASmart Define. (2015). underhandedly thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/underhandedly/thesaurus/synonyms
ChicagoSmart Define. 2015. "underhandedly thesaurus" https://smartdefine.org/underhandedly/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, underhandedly thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/underhandedly/thesaurus/synonyms>.
MLASmart Define. "underhandedly thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/underhandedly/thesaurus/synonyms>