adjective
a word that describes or modifies a noun, in this case, 'unrivaled' describes something that has no equal or competition
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The company's commitment to quality and innovation has led to its unrivaled success in the industry.
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Her baking skills are unrivaled - no one can make a better cake than she can.
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His basketball skills are straight up unrivaled - he dominates the court every game.
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The artist's ability to capture raw emotion in her paintings is truly unrivaled.