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

63 entries under clandestine topic. ×

2
on the QT(expression, adjective, idiom, adverb, dishonest)
2
shrouded(obscure, secret, unknown, hidden)
2
sneak(underground, undisclosed, skulking)
2
sub-rosa(adjective, dishonest, cunning, deceitful, secret)
2
under-the-table(secret, private, hidden, sneaky)
2
under cover(expression, adjective, adverb, sly)
2
unknown(secret, hidden, underground, concealed)
2
veiled(obscure, secret, private, unknown, hidden)
1
by stealth(expression, adverb, secretly, underhandedly)
1
camouflaged(obscure, secret, hidden, indirect)
1
conspiratorial(underground, undisclosed, sneaky, covert)
1
deep(adjective, underground, undisclosed)
1
dissembled(secret, hidden, underground, undisclosed)
1
in camera(expression, adverb, secretly, underhandedly)
1
in holes and corners(expression, idiom, adverb, sly)
1
on the quiet(expression, idiom, adverb, dishonest)
1
on the sly(expression, idiom, adverb, secret)
1
reticent(mysterious, private, taciturn, underground)
1
stealthily(adverb, secretly, furtively, slyly)
1
surreptitiously(adverb, secretly, slyly, underhandedly)
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APASmart Define. (2015). undercover thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/undercover/thesaurus/synonyms
ChicagoSmart Define. 2015. "undercover thesaurus" https://smartdefine.org/undercover/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, undercover thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/undercover/thesaurus/synonyms>.
MLASmart Define. "undercover thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/undercover/thesaurus/synonyms>