48 entries under adverb topic. ×

2
on the sly(noun, expression, idiom, clandestine)
2
shiftily
2
unscrupulously
1
by stealth(expression, clandestine, quietly, personally)
1
crookedly
1
deceptively
1
feloniously
1
hush-hush(clandestine, quietly, secretly, personally)
1
in camera(expression, clandestine, quietly, personally)
1
in holes and corners(expression, idiom, clandestine, quietly)
1
irregularly
1
on the QT(expression, idiom, clandestine, quietly)
1
on the quiet(expression, idiom, clandestine, quietly)
1
sneakily
1
sub rosa(expression, clandestine, quietly, personally)
1
traitorously
1
treacherously
1
under wraps(expression, clandestine, secretly, slyly)
1
undercover(clandestine, secretly, slyly, surreptitiously)
1
wildcat(clandestine, secretly, slyly, surreptitiously)
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APASmart Define. (2015). underhandedly thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/underhandedly/thesaurus/synonyms
ChicagoSmart Define. 2015. "underhandedly thesaurus" https://smartdefine.org/underhandedly/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, underhandedly thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/underhandedly/thesaurus/synonyms>.
MLASmart Define. "underhandedly thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/underhandedly/thesaurus/synonyms>