14 entries under idiom topic. ×

4
top secret(noun, expression, adjective, sensitive)
3
under wraps(expression, sensitive, secret, clandestine)
2
off the record(expression, adjective, intimate, private)
1
on the QT(expression, obscure, sensitive, private)
1
under false pretense(expression, sensitive, clandestine, underground)
0
behind the scenes(expression, personal, confidential, hush-hush)
0
cloak and dagger(expression, obscure, unknown, unrevealed)
0
for eyes only(expression, sensitive, sub-rosa)
0
hush hush
0
not for publication(expression, sensitive, secret, private)
0
put in order
0
under security restrictions(noun, expression, ranked)
0
under the table(expression, sensitive, confidential, sub-rosa)
0
with a lid on(expression, sensitive, sub-rosa)
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APASmart Define. (2015). classified thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/classified/thesaurus/synonyms
ChicagoSmart Define. 2015. "classified thesaurus" https://smartdefine.org/classified/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, classified thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/classified/thesaurus/synonyms>.
MLASmart Define. "classified thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/classified/thesaurus/synonyms>