112 entries under adjective topic. ×

5
backstairs(mysterious, private, reticent, taciturn)
5
dark(feature, obscure, mysterious, hidden)
5
screened(quiet, secret, hidden, imperceptible)
5
sneaking(mean, smooth, cunning, private)
5
under-the-table(secret, private, hidden, clandestine)
5
underhanded(dishonest, deceitful, secret, clandestine)
4
arcane(strange, secret, clandestine, underground)
4
cloak-and-dagger(show, full, secret, clandestine)
4
esoteric(strange, secret, unknown, hidden)
4
recondite(strange, secret, unknown, hidden)
4
secluded(close, quiet, private, unknown)
4
skulking(secret, private, hidden, sneaky)
4
sub rosa(show, clandestine, underhanded)
3
classified(secret, clandestine, underground, undisclosed)
3
dormant
3
restricted(secret, clandestine, underground, undisclosed)
3
unapparent(invisible, latent)
3
unexposed
3
unobservable(invisible, latent)
3
unseeable
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APASmart Define. (2015). covert thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/covert/thesaurus/synonyms
ChicagoSmart Define. 2015. "covert thesaurus" https://smartdefine.org/covert/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, covert thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/covert/thesaurus/synonyms>.
MLASmart Define. "covert thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/covert/thesaurus/synonyms>