289 entries under adjective topic. ×

3
incomprehensible(obscure, solid, heavy, strange)
3
inconspicuous(quiet, plain, humble, minor)
3
inexplicable(hard, obscure, solid, strange)
3
internal(private, mental, inner)
3
out-of-the-way(close, quiet, separate, shy)
3
psychological(private, mental, inner)
3
shaded(verb, shady, shaded)
3
sneaky(secret, private, clandestine, underground)
3
subliminal(unconscious, subconscious)
3
unavowed
3
unexpressed(obscure, dark, immense, indirect)
3
unintelligible(hard, obscure, solid, dark)
3
unobservable(invisible, latent)
3
unpublished(clandestine, underground, undisclosed)
3
unsung(strange, indefinite, unidentified)
3
viscerous(private, mental, inner)
3
withheld(secret, concealed, unseen)
2
ambiguous(cover, obscure, dark, doubtful)
2
cabbalistic
2
close-lipped(quiet, reserved, secret, private)
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APASmart Define. (2015). hidden thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/hidden/thesaurus/synonyms
ChicagoSmart Define. 2015. "hidden thesaurus" https://smartdefine.org/hidden/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, hidden thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/hidden/thesaurus/synonyms>.
MLASmart Define. "hidden thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/hidden/thesaurus/synonyms>