Synonyms|208Antonyms|19|Broader|0Narrower|0Related|34

52 entries under underground topic. ×

2
undercover(adjective, dishonest, cunning, deceitful, secret)
1
backdoor(adjective, close, sensitive, clandestine)
1
backstairs(adjective, close, sensitive, clandestine)
1
camouflaged(adjective, close, clandestine, undisclosed)
1
classified(adjective, sensitive, secret, clandestine)
1
close(adjective, clandestine, undisclosed, furtive)
1
confidential(adjective, secret, hidden, spy, clandestine)
1
conspiratorial(adjective, clandestine, sneaky, covert)
1
cryptic(adjective, close, clandestine, undisclosed)
1
discreet(adjective, close, clandestine, undisclosed)
1
disguised(adjective, secret, hidden, clandestine)
1
dissembled(adjective, close, clandestine, undisclosed)
1
dissimulated(adjective, close, clandestine, undisclosed)
1
hidden(adjective, secret, private, spy)
1
in ambush(expression, adjective, close, sensitive, clandestine)
1
inside(adjective, close, clandestine, undisclosed)
1
on the QT(expression, adjective, idiom, sensitive, dishonest)
1
restricted(adjective, secret, clandestine, undisclosed)
1
sneak(adjective, close, clandestine, undisclosed)
1
top secret(expression, adjective, close, sensitive, clandestine)
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APASmart Define. (2013). sub-rosa thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sub-rosa/thesaurus/synonyms
ChicagoSmart Define. 2013. "sub-rosa thesaurus" https://smartdefine.org/sub-rosa/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2013, sub-rosa thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sub-rosa/thesaurus/synonyms>.
MLASmart Define. "sub-rosa thesaurus" 28 June 2013. Web. 24 September 2026. <https://smartdefine.org/sub-rosa/thesaurus/synonyms>