Unknown
Unknown adjective - Happening or existing without one's knowledge.
Without parallel and unknown are semantically related. In some cases you can use "Without parallel" instead an adjective "Unknown".
Nearby Words: unknowable, unknowing
Without parallel
Unknown and without parallel are semantically related. Sometimes you can use "Unknown" instead an adjective phrase "Without parallel".
Mutual synonyms
Cite this Source
Without parallel and Unknown. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/unknown/without_parallel
Unknown & Without parallel. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/unknown/without_parallel>.
Without parallel or Unknown. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/unknown/without_parallel.
Google Ngram Viewer shows how "unknown" and "without parallel" have occurred on timeline