Synonyms|707Antonyms|132|Broader|7Narrower|4Related|738

62 entries under clandestine topic. ×

2
reticent(mysterious, private, taciturn, underground)
2
sub-rosa(secret, private, hidden, spy)
2
unintelligible(underground, undisclosed, concealment)
2
unpublished(adjective, underground, undisclosed)
1
backdoor(underground, undisclosed)
1
enigmatical(strange, underground, undisclosed, inexplicable)
1
in ambush(expression, underground, undisclosed)
1
inside(underground, undisclosed)
1
out-of-the-way(close, quiet, private, isolated)
1
retired(verb, close, quiet, private, isolated)
1
strange(underground, undisclosed, inexplicable, unexplained)
1
top secret(expression, underground, undisclosed)
1
unacknowledged(underground, undisclosed)
1
under false pretense(expression, idiom, underground, undisclosed)
1
unfrequented(close, quiet, private, isolated)
0
QT(adjective, underhanded)
0
ambiguous(cover, obscure, dark, equivocal)
0
deep(underground, undisclosed)
0
incog(adjective, underhanded)
0
top-secret(secret, underground, undisclosed)
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ChicagoSmart Define. 2015. "covert thesaurus" https://smartdefine.org/covert/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, covert thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/covert/thesaurus/synonyms>.
MLASmart Define. "covert thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/covert/thesaurus/synonyms>