47 entries under adverb topic. ×

1
behind the scenes(expression, idiom, unobtrusively)
1
by stealth(expression, clandestine, quietly, personally)
1
fraudulently
1
hush-hush(clandestine, quietly, secretly, personally)
1
illegally
1
illicitly
1
in camera(expression, clandestine, quietly, personally)
1
in holes and corners(expression, idiom, clandestine, quietly)
1
irregularly
1
mysteriously
1
on the QT(expression, idiom, clandestine, quietly)
1
privily(quietly, secretly, personally, privately)
1
sneakingly
1
under wraps(expression, clandestine, secretly, slyly)
1
undercover(clandestine, secretly, slyly, underhandedly)
1
unobtrusively
1
wildcat(clandestine, secretly, slyly, underhandedly)
0
mystically
0
behind one's back
0
cautiously
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APASmart Define. (2015). surreptitiously thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/surreptitiously/thesaurus/synonyms
ChicagoSmart Define. 2015. "surreptitiously thesaurus" https://smartdefine.org/surreptitiously/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, surreptitiously thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/surreptitiously/thesaurus/synonyms>.
MLASmart Define. "surreptitiously thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/surreptitiously/thesaurus/synonyms>