69 entries under underground topic. ×

3
disguised(clandestine, undisclosed)
3
dissembled(verb, close, restricted, clandestine)
2
secret(adjective, clandestine, undisclosed, underhand)
1
backdoor(close, inside, clandestine, undisclosed)
1
backstairs(close, restricted, inside, clandestine)
1
camouflaged(close, clandestine, undisclosed, furtive)
1
classified(clandestine, undisclosed)
1
close(inside, clandestine, undisclosed, furtive)
1
confidential(restricted, clandestine, discreet, undisclosed)
1
covert(clandestine, undisclosed)
1
cryptic(close, inside, clandestine, undisclosed)
1
discreet(close, restricted, inside, clandestine)
1
furtive(close, clandestine, undisclosed)
1
hush-hush(clandestine, undisclosed)
1
incognito(close, restricted, clandestine, discreet)
1
inside(close, restricted, clandestine, discreet)
1
mysterious(adjective, clandestine, undisclosed)
1
obscure(adjective, clandestine, undisclosed)
1
occult(noun, clandestine, undisclosed)
1
restricted(clandestine, discreet, undisclosed)
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APASmart Define. (2013). dissimulated thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/dissimulated/thesaurus/synonyms
ChicagoSmart Define. 2013. "dissimulated thesaurus" https://smartdefine.org/dissimulated/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2013, dissimulated thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/dissimulated/thesaurus/synonyms>.
MLASmart Define. "dissimulated thesaurus" 17 June 2013. Web. 23 September 2026. <https://smartdefine.org/dissimulated/thesaurus/synonyms>