43 entries under underground topic. ×

10
camouflaged(verb, adjective, secure, obscure, secret)
6
covered(noun, verb, adjective, secure, obscure)
3
dissembled(verb, secret, hidden, clandestine)
2
dissimulated(verb, clandestine, undisclosed)
2
unknown(adjective, obscure, secret, hidden)
1
backdoor(obscure, unknown, clandestine, undisclosed)
1
backstairs(clandestine, undisclosed)
1
classified(obscure, unknown, clandestine, undisclosed)
1
confidential(secret, hidden, clandestine, undisclosed)
1
conspiratorial(obscure, unknown, clandestine, sneaky)
1
discreet(clandestine, undisclosed)
1
in ambush(expression, clandestine, undisclosed)
1
inside(clandestine, undisclosed)
1
mysterious(secret, unknown, hidden, concealed)
1
retired(verb, obscure, unknown, clandestine)
1
secretive(clandestine, undisclosed, sneaky, covert)
1
sly(clandestine, undisclosed, sneaky, covert)
1
sneak(clandestine, undisclosed)
1
sneaky(clandestine, undisclosed, covert, secretive)
1
sub-rosa(secret, hidden, clandestine, sneaky)
<123>
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APASmart Define. (2015). disguised thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/disguised/thesaurus/synonyms
ChicagoSmart Define. 2015. "disguised thesaurus" https://smartdefine.org/disguised/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, disguised thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/disguised/thesaurus/synonyms>.
MLASmart Define. "disguised thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/disguised/thesaurus/synonyms>