Synonyms|289Antonyms|73|Broader|7Narrower|5Related|182

15 entries under underhandedly topic. ×

12
clandestinely(adverb, show, clandestine, furtively, slyly)
9
slyly(adverb, clandestine, furtively, surreptitiously)
8
on the sly(expression, idiom, adverb, show, clandestine)
5
by stealth(expression, idiom, adverb, show, clandestine)
5
sub rosa(expression, adverb, show, clandestine, slyly)
4
on the quiet(expression, idiom, adverb, clandestine, slyly)
3
clandestine(adjective, adverb, slyly, surreptitiously)
3
in camera(expression, adverb, clandestine, slyly)
3
undercover(adjective, adverb, clandestine, slyly)
2
under cover(expression, idiom, adverb, show, clandestine)
1
hush-hush(adverb, clandestine, slyly, surreptitiously)
1
in holes and corners(expression, idiom, adverb, clandestine, slyly)
1
on the QT(expression, idiom, adverb, clandestine, slyly)
1
under wraps(expression, adverb, clandestine, slyly)
1
wildcat(adverb, clandestine, slyly, surreptitiously)
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APASmart Define. (2016). secretly thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/secretly/thesaurus/synonyms
ChicagoSmart Define. 2016. "secretly thesaurus" https://smartdefine.org/secretly/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, secretly thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/secretly/thesaurus/synonyms>.
MLASmart Define. "secretly thesaurus" 19 February 2016. Web. 25 September 2026. <https://smartdefine.org/secretly/thesaurus/synonyms>