Not known
Unclassified and not known are semantically related in secret topic. In some cases you can use "Unclassified" instead an adjective phrase "Not known".
Unclassified
Unclassified adjective - Not arranged in any specific grouping.
Not known and unclassified are semantically related in secret topic. Sometimes you can use "Not known" instead an adjective "Unclassified".
Mutual synonyms
Related pairs
- obscure and not known
- obscure and unclassified
- secret and not known
- secret and unclassified
- nameless and not known
- nameless and unclassified
- mysterious and not known
- mysterious and unclassified
- far off and not known
- far off and unclassified
- little known and not known
- little known and unclassified
- unknown and not known
- unknown and unclassified
Cite this Source
Unclassified and Not known. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/not_known/unclassified
Not known & Unclassified. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/not_known/unclassified>.
Unclassified or Not known. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/not_known/unclassified.
Google Ngram Viewer shows how "not known" and "unclassified" have occurred on timeline