0
QT(unknowing, hermetical, unbriefed)
0
abstruse(clandestine, underground, undisclosed)
0
ambiguous(clandestine, underground, undisclosed)
0
apprenticed(unknowing, hermetical, unbriefed)
0
arrangement
0
backstage(unknowing, hermetical, unbriefed)
0
behind the curtain(expression, idiom, unknowing, hermetical, unbriefed)
0
behind the scenes(expression, idiom, unknowing, hermetical, unbriefed)
0
birdbrained(unknowing, hermetical, unbriefed)
0
blind to(expression, unknowing, hermetical, unbriefed)
0
cabal
0
caught napping(expression, unknowing, hermetical, unbriefed)
0
cautious(mysterious, private, reticent)
0
chart
0
cloak-and-dagger(clandestine, underground, undisclosed)
0
cloak and dagger(expression, idiom, restricted, discreet)
0
clouded(clandestine, underground, undisclosed)
0
conspiracy
0
conspiratorial(clandestine, underground, undisclosed)
0
contrivance
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APASmart Define. (2015). backstairs thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/backstairs/thesaurus/synonyms
ChicagoSmart Define. 2015. "backstairs thesaurus" https://smartdefine.org/backstairs/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, backstairs thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/backstairs/thesaurus/synonyms>.
MLASmart Define. "backstairs thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/backstairs/thesaurus/synonyms>