50 entries under clandestine topic. ×

2
top secret(expression, underground, undisclosed)
2
under wraps(expression, underground, undisclosed)
1
out-of-the-way(obscure, complex, unknown, underground)
1
reticent(obscure, unknown, underground, undisclosed)
1
retired(obscure, unknown, underground, undisclosed)
1
secretive(strange, underground, undisclosed, inexplicable)
1
under-the-table(underground, undisclosed)
1
underhand(underground, undisclosed)
1
underhanded(underground, undisclosed)
0
backdoor(obscure, unknown, underground, undisclosed)
0
backstairs(underground, undisclosed)
0
camouflaged(obscure, unknown, underground, undisclosed)
0
cloak-and-dagger(obscure, unknown, underground, undisclosed)
0
closet(obscure, secret, unknown, underground)
0
discreet(underground, undisclosed)
0
dissembled(underground, undisclosed)
0
dissimulated(underground, undisclosed)
0
in ambush(expression, underground, undisclosed)
0
incognito(underground, undisclosed)
0
on the QT(expression, idiom, obscure, unknown)
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APASmart Define. (2015). esoteric thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/esoteric/thesaurus/synonyms
ChicagoSmart Define. 2015. "esoteric thesaurus" https://smartdefine.org/esoteric/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, esoteric thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/esoteric/thesaurus/synonyms>.
MLASmart Define. "esoteric thesaurus" 30 July 2015. Web. 24 September 2026. <https://smartdefine.org/esoteric/thesaurus/synonyms>