9 entries under underhandedly topic. ×

6
clandestinely(noun, adverb, clandestine, quietly, secretly)
5
slyly(noun, adverb, clandestine, quietly, secretly)
3
sub rosa(expression, adverb, clandestine, quietly, personally)
2
clandestine(adverb, secretly, slyly)
1
hush-hush(adverb, clandestine, quietly, secretly, personally)
1
under wraps(expression, adverb, clandestine, secretly, slyly)
1
undercover(adverb, clandestine, secretly, slyly)
1
wildcat(adverb, clandestine, secretly, slyly)
0
under cover(expression, clandestine)
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APASmart Define. (2015). surreptitiously thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/surreptitiously/thesaurus/synonyms
ChicagoSmart Define. 2015. "surreptitiously thesaurus" https://smartdefine.org/surreptitiously/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, surreptitiously thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/surreptitiously/thesaurus/synonyms>.
MLASmart Define. "surreptitiously thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/surreptitiously/thesaurus/synonyms>