39 entries under expression topic. ×

11
in secret(idiom, adverb, concealment, slyly)
8
on the sly(idiom, adverb, show, clandestine)
5
by stealth(idiom, adverb, show, clandestine)
5
in private(idiom, concealment, confidentially)
5
sub rosa(adverb, show, clandestine, slyly)
4
on the quiet(idiom, adverb, clandestine, slyly)
3
behind closed doors(idiom, slyly, confidentially, surreptitiously)
3
behind the scenes(idiom, latency implication)
3
in camera(adverb, clandestine, slyly, underhandedly)
3
off the record(idiom, softly, gently, modestly)
2
in the background(idiom, latency implication)
2
in the dark(idiom, concealment)
2
under cover(idiom, adverb, show, clandestine)
2
under the rose
1
behind the curtain
1
behind the veil
1
in a corner
1
in a whisper
1
in confidence(idiom, slyly, confidentially, surreptitiously)
1
in disguise(idiom, adverb)
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APASmart Define. (2016). secretly thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/secretly/thesaurus/synonyms
ChicagoSmart Define. 2016. "secretly thesaurus" https://smartdefine.org/secretly/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, secretly thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/secretly/thesaurus/synonyms>.
MLASmart Define. "secretly thesaurus" 19 February 2016. Web. 23 September 2026. <https://smartdefine.org/secretly/thesaurus/synonyms>