0
behind closed doors(expression, idiom)
0
behind the scenes(expression, special, intimate, personal, confidential)
0
below the belt
0
bye
0
cabbalistic
0
calculating(sneaky, covert, secretive)
0
case
0
catlike(sneak, skulking)
0
catty(sneak, skulking)
0
chanceful
0
circumlocutionary
0
circumspect(sneaky, covert, secretive)
0
circumventive
0
cliquey
0
cloak and dagger(expression, idiom, quiet, intriguing)
0
cloister
0
cloistral
0
closely
0
communicated covertly(expression, idiom)
0
concealment
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APASmart Define. (2015). clandestine thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/clandestine/thesaurus/synonyms
ChicagoSmart Define. 2015. "clandestine thesaurus" https://smartdefine.org/clandestine/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, clandestine thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/clandestine/thesaurus/synonyms>.
MLASmart Define. "clandestine thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/clandestine/thesaurus/synonyms>