終しゅう日じつ

noun, adverb

all day; the whole day

Used as a noun or adverb to indicate that something continues or happens throughout the entire day, from morning to night.

• 彼かれは終しゅう日じつ、図と書しょ館かんで勉べん強きょうしていた。

  He was studying in the library all day.

• 終しゅう日じつ雨