Synonyms|111Antonyms|0|Broader|1Narrower|0Related|6
1
closed
1
concealed
1
confidential(adjective, secret, private, restricted, hidden)
1
covert(clandestine, underground, undisclosed)
1
discreet(close, inside, clandestine, underground, undisclosed)
1
dissembled(close, clandestine, underground, undisclosed, furtive)
1
dissimulated(close, inside, clandestine, underground, undisclosed)
1
enigmatic
1
furtive(close, clandestine, underground, undisclosed)
1
hermetic
1
in ambush(expression, adjective, close, sensitive, inside)
1
incognito(close, clandestine, underground, undisclosed, furtive)
1
inside(close, private, clandestine, underground, undisclosed)
1
latent
1
secretive(clandestine, underground, undisclosed)
1
sly(clandestine, underground, undisclosed)
1
smothered
1
sneak(close, inside, clandestine, underground, undisclosed)
1
sneaky(clandestine, underground, undisclosed)
1
stealthy(clandestine, underground, undisclosed)
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APASmart Define. (2015). top secret thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/top_secret/thesaurus/synonyms
ChicagoSmart Define. 2015. "top secret thesaurus" https://smartdefine.org/top_secret/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, top secret thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/top_secret/thesaurus/synonyms>.
MLASmart Define. "top secret thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/top_secret/thesaurus/synonyms>