13
secretly(adverb, closely, softly, gently, secretly)
11
privately(adverb, quietly, softly, gently, secretly)
6
clandestinely(adverb, secretly)
6
covertly(adverb, quietly, secretly, personally, privately)
4
intimately
4
personally(adverb, closely, quietly, secretly, privately)
4
sub rosa(expression, adverb, quietly, secretly, personally)
3
in private(expression, idiom, adverb, secretly)
3
in secret(expression, idiom, adverb, quietly, secretly)
3
off the record(expression, idiom, adverb, softly, gently)
3
on the q.t
3
surreptitiously
2
closely
2
confidence
2
furtively
2
in confidence(expression, idiom, adverb, concealment, quietly)
2
or Q.T.
2
private
2
privily
2
scene
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APASmart Define. (2015). confidentially thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/confidentially/thesaurus/synonyms
ChicagoSmart Define. 2015. "confidentially thesaurus" https://smartdefine.org/confidentially/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, confidentially thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/confidentially/thesaurus/synonyms>.
MLASmart Define. "confidentially thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/confidentially/thesaurus/synonyms>