Synonyms|410Antonyms|71|Broader|1Narrower|7Related|371

68 entries under adjective topic. ×

4
privy
3
buried(secret, unknown, hidden, concealed)
3
mysterious(quiet, secret, private, reticent)
3
obscure(secret, unknown, hidden, concealed)
3
skulking(secret, private, hidden, sneak)
3
sneaking(dishonest, cunning, deceitful, secret)
3
sneaky(quiet, dishonest, cunning, secret)
3
sub rosa(expression, idiom, show, secret)
3
underneath(secret, hidden, spy, covert)
3
disguised(obscure, secret, hidden, clandestine)
3
incognito(adverb, informal, secret, hidden)
3
mystic(secret, unknown, hidden, underground)
3
obscured(secret, hidden, underground, concealed)
3
secretive(dishonest, cunning, deceitful, mysterious)
3
sly(quiet, dishonest, cunning, deceitful)
3
stealth(noun, secret, hidden, spy)
2
closet(noun, secret, sly, clandestine)
2
creep(secret, hidden, spy, covert)
2
cryptic(mysterious, private, reticent, unknown)
2
disorderly
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APASmart Define. (2015). undercover thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/undercover/thesaurus/synonyms
ChicagoSmart Define. 2015. "undercover thesaurus" https://smartdefine.org/undercover/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, undercover thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/undercover/thesaurus/synonyms>.
MLASmart Define. "undercover thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/undercover/thesaurus/synonyms>