63 entries under underground topic. ×

10
concealed(verb, adjective, quiet, obscure, plain)
10
disguised(verb, adjective, secure, obscure, secret)
4
covered(verb, adjective, secure, obscure, mysterious)
2
clandestine(adjective, secret, hidden, undisclosed)
2
dissembled(verb, close, secret, hidden, clandestine)
2
stealthy(adjective, secret, hidden, clandestine)
2
unrevealed(adjective, obscure, unknown, clandestine)
1
backdoor(close, obscure, unknown, clandestine)
1
backstairs(close, clandestine, undisclosed, furtive)
1
classified(obscure, unknown, clandestine, undisclosed)
1
close(obscure, unknown, clandestine, undisclosed)
1
clouded(obscure, unknown, clandestine, undisclosed)
1
confidential(clandestine, undisclosed)
1
cryptic(close, obscure, unknown, clandestine)
1
discreet(adjective, close, clandestine, imperceptible)
1
dissimulated(verb, close, clandestine, undisclosed)
1
in ambush(expression, close, clandestine, undisclosed)
1
inside(close, clandestine, undisclosed, furtive)
1
private(obscure, secret, unknown, hidden, clandestine)
1
privy(secret, hidden, clandestine, underhanded)
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APASmart Define. (2015). camouflaged thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/camouflaged/thesaurus/synonyms
ChicagoSmart Define. 2015. "camouflaged thesaurus" https://smartdefine.org/camouflaged/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, camouflaged thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/camouflaged/thesaurus/synonyms>.
MLASmart Define. "camouflaged thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/camouflaged/thesaurus/synonyms>