1.
staying out overnight
sleeping away from one's usual residence, such as at a friend's place, hotel, or elsewhere
昨日は友達の家に外泊した。
I stayed overnight at a friend's house yesterday.
寮では外泊届を出す必要がある。
In the dormitory, you need to submit an overnight stay notice.
入院中でも週末は外泊できる。
Even while hospitalized, you can stay out on weekends.
FORMATION:
外 (outside) + 泊 (staying overnight) → staying overnight outside
VERB FORM:
外泊する (to stay out overnight)
CONTEXTS:
- Student dormitories often require 外泊届 (overnight absence notification)
- Hospitals may allow 外泊 for patients who are recovering well
- Sometimes used when discussing where someone spent the night
RELATED WORDS:
- 泊まる (to stay overnight)
- 宿泊 (lodging, staying at an inn)
- 朝帰り (coming home in the morning after staying out)