四十(よんじゅう)

よんじゅう
number
forty
number
1. forty
The number forty. Formed by combining 四(よん) (four) and 十(じゅう) (ten). Note that よん is used instead of し.
四十(よんじゅう)円(えん)です。
It's forty yen.
父(ちち)は四十(よんじゅっ)歳(さい)です。
My father is forty years old.
四十(よんじゅう)人(にん)が参加(さんか)しました。
Forty people participated.
四十(よんじゅっ)分(ぷん)ぐらいで着(つ)きます。
We'll arrive in about forty minutes.
This book has forty pages, but I read ten pages every day.

四十(よんじゅう) is the number forty, combining 四(よん) (four) and 十(じゅう) (ten).

Pronunciation

  • よんじゅう: standard, preferred pronunciation
  • しじゅう: less common, sometimes heard
  • The reading よん is preferred over し because し sounds like 死(し) (death)

Counting patterns

Tens follow a regular pattern: 十(じゅう) (10), 二十(にじゅう) (20), 三十(さんじゅう) (30), 四十(よんじゅう) (40), 五十(ごじゅう) (50)...

Common collocations

Cultural note

四十九日(しじゅうくにち) (49th day) is an important Buddhist memorial service held 49 days after someone's death. Here しじゅう is used.

Related words