Mysterious
Mysterious adjective - Being beyond one's powers to know, understand, or explain.
Unclassified and mysterious are semantically related In some cases you can use "Unclassified" instead an adjective "Mysterious".
Nearby Words: mystery, mysteriously
Unclassified
Unclassified adjective - Not arranged in any specific grouping.
Mysterious and unclassified are semantically related in secret topic. You can use "Mysterious" instead an adjective "Unclassified".
Mutual synonyms
Cite this Source
Unclassified and Mysterious. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/mysterious/unclassified
Mysterious & Unclassified. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/mysterious/unclassified>.
Unclassified or Mysterious. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/mysterious/unclassified.
Google Ngram Viewer shows how "mysterious" and "unclassified" have occurred on timeline