| innominate | |
| nebulous | |
| non-specific | |
| secret(adjective, new, remote, mysterious, unknown) | |
| unbeknown | |
| unclassified(adjective, secret) | |
| undefined | |
| X(adjective, new, remote, unknown, indefinite) | |
| able | |
| concealed(adjective, strange, new, remote, mysterious) | |
| unapprehended(adjective, strange, new, remote, mysterious) | |
| unascertained(adjective, strange, new, remote, mysterious) | |
| unclear | |
| undisclosed | |
| unexplained(adjective, strange, new, remote, mysterious) | |
| uninvestigated | |
| unperceived(adjective, strange, new, remote, mysterious) | |
| clandestine | |
| cryptonymic | |
| cryptonymous |
For more, visit
Unidentified on
Power Thesaurus
| APA | Smart Define. (2015). unidentified thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unidentified/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unidentified thesaurus" https://smartdefine.org/unidentified/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, unidentified thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unidentified/thesaurus/synonyms>. |
| MLA | Smart Define. "unidentified thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/unidentified/thesaurus/synonyms> |