147 entries under unknown topic. ×
| eclipsed(dark, secret, hidden, concealed) | |
| evasive(adjective, uncertain, doubtful, faint, vague) | |
| incognito(adjective, strange, disguise, secret) | |
| little-known(adjective, complex, unfamiliar, abstruse) | |
| unacknowledged(clandestine, underground, undisclosed, anonymous) | |
| unbelievable(adjective, unreasonable, dubious, unfamiliar) | |
| underground(secret, hidden, concealed, unseen) | |
| unexplored(strange, new, indefinite, untried) | |
| unlikely(shaky, unfamiliar, unbelievable, unpromising) | |
| unrecognized(adjective, strange, indefinite, unidentified) | |
| unrenowned(strange, unfamiliar, indefinite, unidentified) | |
| unusual(adjective, dark, superior, strange, new) | |
| QT(secret, isolated, hidden, concealed) | |
| X(strange, indefinite, unidentified, anonymous) | |
| alien(strange, new, indefinite, unrelated) | |
| camouflaged(quiet, plain, secret, hidden) | |
| curious(strange, new, untried, inexplicable) | |
| exotic(strange, new, indefinite, untried) | |
| fantastic(excellent, extraordinary, superior, new) | |
| furtive(strange, clandestine, underground, undisclosed) |
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| APA | Smart Define. (2016). obscure thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/obscure/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "obscure thesaurus" https://smartdefine.org/obscure/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, obscure thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/obscure/thesaurus/synonyms>. |
| MLA | Smart Define. "obscure thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/obscure/thesaurus/synonyms> |