Synonyms|128Antonyms|3|Broader|4Narrower|0Related|53

19 entries under sensitive topic. ×

5
secret(adjective, intimate, private, hidden)
2
backstairs(adjective, close, secret, restricted)
1
classified(obscure, intimate, secret, private)
1
in ambush(expression, close, inside, clandestine)
1
on the QT(expression, idiom, obscure, private)
1
sub-rosa(close, clandestine, underground, undisclosed)
1
top secret(expression, close, inside, clandestine)
1
unacknowledged(close, inside, clandestine, underground)
1
under-the-table(clandestine, underground, undisclosed, sub-rosa)
1
under false pretense(expression, idiom, close, clandestine)
0
buttoned up(expression, sub-rosa)
0
for eyes only(expression, idiom, sub-rosa)
0
hidden away(expression, sub-rosa)
0
kept concealed(expression, sub-rosa)
0
not for publication(expression, idiom, secret, private)
0
privileged
0
under the table(expression, idiom, close, inside)
0
under wraps(expression, clandestine, underground, undisclosed)
0
with a lid on(expression, idiom, sub-rosa)
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APASmart Define. (2013). backdoor thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/backdoor/thesaurus/synonyms
ChicagoSmart Define. 2013. "backdoor thesaurus" https://smartdefine.org/backdoor/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, backdoor thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/backdoor/thesaurus/synonyms>.
MLASmart Define. "backdoor thesaurus" 19 May 2013. Web. 21 September 2026. <https://smartdefine.org/backdoor/thesaurus/synonyms>