Synonyms|558Antonyms|116|Broader|11Narrower|9Related|411

60 entries under secret topic. ×

1
cryptic(obscure, unknown, hidden, concealed)
1
disguised(unknown, hidden, concealed, covert)
1
esoteric(obscure, unknown, hidden, concealed)
1
on the QT(expression, adjective, idiom, obscure, mysterious)
1
on the sly(expression, adjective, idiom, unusual)
1
resistant(adjective, subversive)
1
resistive(adjective, subversive)
1
shrouded(obscure, unknown, hidden, concealed)
1
unbowed(adjective, subversive)
1
unrevealed(obscure, unknown, hidden, concealed)
1
unseen(obscure, unknown, hidden, concealed)
1
veiled(obscure, unknown, hidden, clandestine)
0
camouflaged(obscure, unknown, clandestine, undisclosed)
0
creep(hidden, spy, covert)
0
dissembled(clandestine, undisclosed)
0
incognito(hidden, spy, clandestine, undisclosed)
0
intelligence(hidden, spy, covert)
0
spy(hidden, covert)
0
stealth(hidden, spy, covert)
0
sub-rosa(hidden, spy, clandestine, undisclosed)
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APASmart Define. (2015). underground thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/underground/thesaurus/synonyms
ChicagoSmart Define. 2015. "underground thesaurus" https://smartdefine.org/underground/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, underground thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/underground/thesaurus/synonyms>.
MLASmart Define. "underground thesaurus" 3 November 2015. Web. 27 September 2026. <https://smartdefine.org/underground/thesaurus/synonyms>