15 entries under noun topic. ×

5
surreptitiously
4
furtively(adverb, secretly, slyly, surreptitiously)
4
slyly(adverb, secretly, furtively, deceitfully)
3
clandestinely
3
stealthily(adverb, secretly, furtively, slyly)
2
covertly
1
basely
1
on the q.t
1
on the sly
1
or Q.T.
1
quietly
1
sly
1
underhandedly
0
on the side
0
slily
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APASmart Define. (2015). sneakily thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/sneakily/thesaurus/synonyms
ChicagoSmart Define. 2015. "sneakily thesaurus" https://smartdefine.org/sneakily/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, sneakily thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/sneakily/thesaurus/synonyms>.
MLASmart Define. "sneakily thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/sneakily/thesaurus/synonyms>