English edit

English numbers (edit)
 ←  20 21 22  → 
    Cardinal: twenty-one
    Ordinal: twenty-first
    Adverbial: twenty-one times

Adjective edit

twenty-first (not comparable)

  1. The ordinal form of the number twenty-one.

Abbreviations edit

21st, 21st, XXI

Translations edit

Noun edit

twenty-first (plural twenty-firsts)

  1. The person or thing in the twenty-first position.
  2. One of twenty-one equal parts of a whole, usually written 121.
  3. (informal) A party to celebrate a twenty-first birthday.

Synonyms edit

Translations edit

See also edit