夜更かし
Common
Noun
Irregular
Intransitive
1
noun (common) (futsuumeishi)noun or participle which takes the aux. verb suruintransitive verb
staying up late;sitting up late at night;keeping late hours
そんなに夜ふかしをするべきではない。
You ought not to sit up so late.
Other forms
夜更し 【よふかし】 (search-only kanji form) · 夜ふかし 【よふかし】 (search-only kanji form)