1.
all day, the whole day, throughout the day
From morning until evening without interruption. A formal word often seen in written notices, schedules, and announcements.
Usage
A formal, written-style word that functions as both a noun and an adverb. Often seen on signs, notices, and schedules. In casual speech, 一日中 is preferred.
Common collocations
- 終日営業: open all day
- 終日運休: out of service all day
- 終日通行止め: closed to traffic all day
- 終日禁煙: no smoking all day
Similar words
一日中 (all day long) is the everyday equivalent. 終日 is more formal and concise, making it ideal for signs and official announcements.