Definitions
not capable of being improved on
Word origin
From un- + surpassed.
Used in a sentence
“All grades of coal, deepmined and opencast, are produced, and Durham coking coal is unsurpassed for iron and steel making and is world-famous.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Better than all rivals”11 letters
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