15
solitary(adjective, close, quiet, separate, simple)
14
covert(adjective, close, quiet, secret, hidden)
14
separate(adjective, simple, special, individual, distinct)
13
isolated(adjective, quiet, separate, simple, mild)
13
remote(adjective, close, quiet, mild, shy)
12
especial(adjective, separate, simple, extraordinary, unusual)
12
gut(adjective, heart, secret, inside, personal)
12
home(adjective, house, heart, family, inside)
12
interior(adjective, heart, secret, inside, personal)
12
retired(adjective, close, quiet, obscure, mild)
12
singular(adjective, close, quiet, separate, simple)
11
innermost(adjective, secret, inside, personal, central)
11
peculiar(adjective, characteristic, extraordinary, unusual, exceptional)
11
surreptitious(adjective, secret, unknown, hidden, clandestine)
11
viscerous(adjective, heart, secret, inside, personal)
10
hush-hush(adjective, show, informal, reserved, intimate)
10
in-house(adjective, inside, central, interior, inner)
10
off the record(expression, adjective, idiom, intimate, personal)
10
restricted(adjective, separate, simple, special, individual)
9
close(adjective, quiet, obscure, dark, familiar)
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APASmart Define. (2016). private thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/private/thesaurus/synonyms
ChicagoSmart Define. 2016. "private thesaurus" https://smartdefine.org/private/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, private thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/private/thesaurus/synonyms>.
MLASmart Define. "private thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/private/thesaurus/synonyms>