42 entries under adjective topic. ×

10
unseen(hidden, covert, stealthy, unnoticed)
8
undiscovered(knowledge, obscure, hidden, imaginary)
6
unexposed(knowledge, obscure, dark, unknown)
4
invisible(obscure, dark, secret, unknown)
3
obscure(dark, secret, unknown, hidden)
3
hidden(secret, unseen)
2
unobserved
2
unperceived(covert, stealthy, unnoticed)
2
unexplored
2
unfound(knowledge, obscure, undiscovered, untraveled)
2
unknown(obscure, dark, secret, hidden)
1
unnoticed
1
cryptic(obscure, dark, secret, unknown)
1
imperceptible
1
inconspicuous
1
indistinct
1
latent(obscure, dark, secret, unknown)
1
little-known(obscure, undiscovered, untraveled, unfound)
1
mysterious(obscure, dark, secret, unknown)
1
secluded(obscure, dark, secret, unknown)
<123>
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APASmart Define. (2015). undetected thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/undetected/thesaurus/synonyms
ChicagoSmart Define. 2015. "undetected thesaurus" https://smartdefine.org/undetected/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, undetected thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/undetected/thesaurus/synonyms>.
MLASmart Define. "undetected thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/undetected/thesaurus/synonyms>