113 entries under mysterious topic. ×

7
humble(adjective, obscure, strange, distant, minor)
7
undiscovered(adjective, obscure, strange, private)
7
exotic(adjective, obscure, experience, strange, new)
7
unrevealed(adjective, obscure, dark, superior)
6
new(adjective, obscure, strange, exceptional, awkward)
6
unapprehended(adjective, obscure, strange, indefinite)
6
undistinguished(adjective, obscure, strange, humble, minor)
6
unexplained(adjective, obscure, strange, indefinite)
5
indefinite(adjective, rough, strange, vague)
5
remote(adjective, obscure, experience, new, different)
5
unascertained(adjective, obscure, strange, indefinite)
5
unknowable(obscure, dark, superior, strange)
5
untold(adjective, obscure, strange, indefinite)
4
invisible(obscure, dark, superior, deep)
4
little known(expression, adjective, obscure, strange, new)
4
shadowy(adjective, obscure, rough, dark, vague)
4
unnoted(adjective, obscure, strange, indefinite)
4
unrenowned(adjective, obscure, strange, unfamiliar)
4
unspecified(adjective, rough, strange, vague)
3
novel(adjective, obscure, unusual, strange, new)
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APASmart Define. (2015). unknown thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unknown/thesaurus/synonyms
ChicagoSmart Define. 2015. "unknown thesaurus" https://smartdefine.org/unknown/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unknown thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unknown/thesaurus/synonyms>.
MLASmart Define. "unknown thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/unknown/thesaurus/synonyms>