33 entries under expression topic. ×

1
buttoned up(adjective, sensitive, mysterious, private)
1
clammed up(mysterious, private, reticent, taciturn)
1
in ambush(close, sensitive, restricted, clandestine)
1
in chambers(mysterious, private, reticent, taciturn)
1
in privacy(mysterious, private, reticent, taciturn)
1
in private(mysterious, private, reticent, taciturn)
1
in the background(idiom, mysterious, reticent, taciturn)
1
in the dark(idiom, mysterious, reticent, taciturn)
1
on the QT(idiom, sensitive, reticent, taciturn)
1
top secret(close, sensitive, inside, clandestine)
1
under false pretense(idiom, close, sensitive, clandestine)
0
behind the curtain(idiom, unknowing, hermetical, unbriefed)
0
behind the scenes(idiom, unknowing, hermetical, unbriefed)
0
blind to(unknowing, hermetical, unbriefed)
0
caught napping(unknowing, hermetical, unbriefed)
0
cloak and dagger(idiom, restricted, discreet)
0
for eyes only(idiom, sensitive, sub-rosa)
0
hidden away(sensitive, sub-rosa)
0
in a corner(idiom, unknowing, hermetical, unbriefed)
0
in secret(unknowing, hermetical, unbriefed)
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APASmart Define. (2015). backstairs thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/backstairs/thesaurus/synonyms
ChicagoSmart Define. 2015. "backstairs thesaurus" https://smartdefine.org/backstairs/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, backstairs thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/backstairs/thesaurus/synonyms>.
MLASmart Define. "backstairs thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/backstairs/thesaurus/synonyms>