135 entries under mysterious topic. ×
| impenetrable(adjective, obscure, dark, superior, strange) | |
| incog(strange, new, remote, hidden) | |
| supernatural(adjective, obscure, dark, strange, odd) | |
| undiscovered(strange, new, remote, indefinite) | |
| unidentified(new, remote, unknown, indefinite) | |
| unintelligible(adjective, obscure, dark, superior, uncertain) | |
| unknowable(adjective, obscure, dark, superior, strange) | |
| unperceived(new, remote, indefinite, unseen) | |
| Delphian(adjective, evil, obscure, dark, uncertain) | |
| abnormal(obscure, dark, superior, supernatural) | |
| alien(strange, new, remote, indefinite) | |
| anagogic(adjective, evil, deep, supernatural) | |
| celestial(obscure, dark, superior, supernatural) | |
| desolate(quiet, strange, new, remote) | |
| equivocal(dark, strange, uncertain, inexplicable) | |
| exotic(strange, new, remote, indefinite) | |
| fairy(obscure, dark, superior, supernatural) | |
| faraway(obscure, strange, new, remote) | |
| foreign(strange, new, remote, indefinite) | |
| heavenly(obscure, dark, superior, supernatural) |
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| APA | Smart Define. (2016). secret thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/secret/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "secret thesaurus" https://smartdefine.org/secret/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2016, secret thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/secret/thesaurus/synonyms>. |
| MLA | Smart Define. "secret thesaurus" 31 March 2016. Web. 30 September 2026. <https://smartdefine.org/secret/thesaurus/synonyms> |