60 entries under adjective topic. ×

18
secret(quiet, show, separate, dishonest)
14
covert(show, secret, hidden, clandestine)
13
clandestine(show, dishonest, secret, hidden)
12
surreptitious(dishonest, secret, hidden, sneaky)
11
confidential(show, separate, intimate, secret)
11
private(show, reserved, intimate, secret)
10
undercover(show, dishonest, secret, hidden)
8
hugger-mugger(quiet, intriguing)
7
hidden(quiet, separate, reserved, secret)
6
classified(noun, intimate, secret, private)
6
cloak-and-dagger(show, full, secret, clandestine)
6
concealed(separate, dishonest, secret, hidden)
6
hole-and-corner(secret, private, hidden, spy)
6
restricted(close, secret, hidden, clandestine)
6
stealthy(quiet, dishonest, secret, hidden)
5
under wraps(expression, idiom, show, dishonest)
5
underground(secret, hidden, spy, clandestine)
4
furtive(dishonest, secret, hidden, sneaky)
4
inside(show, intimate, private, personal)
4
quiet(verb, calm, dull, suppress)
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APASmart Define. (2015). hush-hush thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/hush-hush/thesaurus/synonyms
ChicagoSmart Define. 2015. "hush-hush thesaurus" https://smartdefine.org/hush-hush/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, hush-hush thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/hush-hush/thesaurus/synonyms>.
MLASmart Define. "hush-hush thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/hush-hush/thesaurus/synonyms>