0
apprenticed(unknowing, hermetical, unbriefed)
0
backstage(unknowing, hermetical, unbriefed)
0
backstairs(unknowing, hermetical, unbriefed)
0
behind-the-scenes(adjective, background)
0
behind the curtain(expression, idiom, unknowing, hermetical, unbriefed)
0
birdbrained(unknowing, hermetical, unbriefed)
0
buttoned up(expression, unknowing, hermetical, unbriefed)
0
by stealth(expression, idiom)
0
caught napping(expression, unknowing, hermetical, unbriefed)
0
clammed up(expression, unknowing, hermetical, unbriefed)
0
clandestine
0
confidential
0
cop
0
corners
0
covert
0
cretinous(unknowing, hermetical, unbriefed)
0
dim
0
disguised
0
entre nous
0
filch
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APASmart Define. (2016). in secret thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/in_secret/thesaurus/synonyms
ChicagoSmart Define. 2016. "in secret thesaurus" https://smartdefine.org/in_secret/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, in secret thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/in_secret/thesaurus/synonyms>.
MLASmart Define. "in secret thesaurus" 19 February 2016. Web. 28 September 2026. <https://smartdefine.org/in_secret/thesaurus/synonyms>