33 entries under adverb topic. ×

30
secret(adjective, close, quiet, show)
29
private(adjective, close, quiet, show)
7
off the record(expression, adjective, idiom, intimate)
5
not for publication(expression, adjective, idiom, sensitive)
2
between us(expression, sensitive, eyes-only)
2
unofficial(adjective, sensitive, special, intimate)
1
anonymously
1
clandestinely
1
in confidence(expression, sensitive, eyes-only)
1
incognito(secret, restricted, hidden, spy)
1
on the QT(expression, idiom, sensitive, secret)
1
secretly
1
surreptitiously
1
under one's hat(expression, idiom)
0
buttoned up(expression, eyes-only)
0
closely
0
confidentially
0
covertly
0
darkly
0
eyes-only
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APASmart Define. (2015). confidential thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/confidential/thesaurus/synonyms
ChicagoSmart Define. 2015. "confidential thesaurus" https://smartdefine.org/confidential/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, confidential thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/confidential/thesaurus/synonyms>.
MLASmart Define. "confidential thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/confidential/thesaurus/synonyms>