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Added 10 October 2026

twenty-first

adjective

adjective Definition from Wiktionary (CC BY-SA). More about twenty-first at Wordnik → Where our words come from →

The ordinal form of the number twenty-one.

noun

The person or thing in the twenty-first position.
One of twenty-one equal parts of a whole, usually written ⁄21.
A party to celebrate a twenty-first birthday.

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