Key
Key adjective - Coming before all others in importance.
Usage example: maintains that Sir Isaac Newton remains the key figure in physical science
Unsurpassed and key are semantically related. In some cases you can use "Unsurpassed" instead an adjective "Key".
Unsurpassed
Unsurpassed adjective - Having no equal or rival for excellence or desirability.
Key and unsurpassed are semantically related. Sometimes you can use "Key" instead an adjective "Unsurpassed".
Nearby Word: unsurpassable
Mutual synonyms
Cite this Source
Unsurpassed and Key. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/key/unsurpassed
Key & Unsurpassed. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/key/unsurpassed>.
Unsurpassed or Key. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/key/unsurpassed.
Google Ngram Viewer shows how "key" and "unsurpassed" have occurred on timeline