To excel is defined as to be very good at something.(verb)
An example of excel is to be good enough at a sport to be an Olympic athlete.
See excel in Webster's New World College Dictionary
See excel in American Heritage Dictionary 4
verb ex·celled, ex·cel·ling, ex·cels verb, transitive
Origin: Middle English excellen
Origin: , from Latin excellere; see kel-2 in Indo-European roots.
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