[uhn-rahy-vuh ld]
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  1. having no rival or competitor; having no equal; incomparable; supreme: His work is unrivaled for the beauty of its prose.
Also especially British, un·ri·valled.

Origin of unrivaled

1585–95; un-1 + rivaled
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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