Mysterious
Mysterious adjective - Being beyond one's powers to know, understand, or explain.
Not known and mysterious are semantically related In some cases you can use "Not known" instead an adjective "Mysterious".
Nearby Words: mystery, mysteriously
Not known
Mysterious and not known are semantically related in secret topic. You can use "Mysterious" instead an adjective phrase "Not known", if it concerns topics such as hidden.
Mutual synonyms
Related pairs
- deep and mysterious
- deep and not known
- abstruse and mysterious
- abstruse and not known
- obscure and mysterious
- obscure and not known
- cryptic and mysterious
- cryptic and not known
- esoteric and mysterious
- esoteric and not known
- complicated and mysterious
- complicated and not known
- recondite and mysterious
- recondite and not known
Both terms in one sentence
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Mysterious Past: It is not known who Xenon was or where he came from before Many Happy Returns.
Source: Comicbook / Many Happy Returns
Cite this Source
Not known and Mysterious. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/mysterious/not_known
Mysterious & Not known. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/mysterious/not_known>.
Not known or Mysterious. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/mysterious/not_known.
Google Ngram Viewer shows how "mysterious" and "not known" have occurred on timeline