壱 (yī) - One (formal, financial, or legal numeral) & used in official documents to prevent alteration.

壱Tone 1

yī ｜ 7 strokes ｜ radical: 士

一懿

壱 · yī

One (formal, financial, or legal numeral);

used in official documents to prevent alteration.

One (formal, financial, or legal numeral)used in official documents to prevent alteration.

Usage highlights

Formal numeral oneOne yenTen thousand yenOne hundredOne thousandLegal amount

Synonyms

  • 一— one (standard numeral)
  • 壹— one (Chinese formal numeral)

Antonyms

  • 零— zero
  • 弐— two (formal numeral)
  • 参— three (formal numeral)

Usage & contexts

Examples

  • The formal numeral for one(壱)
  • Used in legal documents(e.g., 金壱万円)
  • Japanese formal numeral one(壱)

Collocations

  • Formal numeral one(壱)
  • One yen(壱円)
  • Ten thousand yen(壱万円)
  • One hundred(壱百)
  • One thousand(壱千)
  • Legal amount(壱)

Idioms

  • Not applicable for this formal numeral character

Cultural background

FAQ
  • Part of the formal numeral system (大字 daiji) used in East Asian financial and legal contexts to prevent forgery
  • Commonly used in Japanese official documents, banknotes, and certificates
  • Derived from Chinese but more commonly used in Japanese contexts today

FAQ