Unclassified and Unknown

Unclassified

Unclassified adjective - Not arranged in any specific grouping.

Unknown and unclassified are semantically related. in secret topic. In some cases you can use "Unknown" instead an adjective "Unclassified".

Unknown

Unknown adjective - Happening or existing without one's knowledge.

Unclassified and unknown are semantically related. You can use "Unclassified" instead an adjective "Unknown".

Nearby Words: unknowable, unknowing
Cite this Source
Unknown and Unclassified. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/unclassified/unknown
Unclassified & Unknown. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/unclassified/unknown>.
Unknown or Unclassified. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/unclassified/unknown.
Google Ngram Viewer shows how "unclassified" and "unknown" have occurred on timeline