更ふかす

ふ

か

す

Freq.FrequencyTop 20,000

更かす · godan verb (-su)

Meanings

godan verb (-su), transitive verb

stay up late; sit up late

Used for intentionally staying awake late into the night, often with 夜を更かす.

夜よるを更ふかすto stay up late into the night
友とも達だちと電でん話わで話はなしていて、つい夜よるを更ふかしてしまった。
I ended up staying up late talking with a friend on the phone.

更ふけるN2
更ける is intransitive (夜が更ける, 'the night grows late'), while 更かす is transitive (夜を更かす, 'to stay up late into the night').

徹てつ夜やN3
徹夜する means to stay awake through the entire night (often for work or study), while 更かす just means staying up later than usual without implying an all-nighter.

早はや寝ねN1
早寝する means to go to bed early, the opposite of 更かす which means to deliberately stay up late.

The transitive counterpart of 更ける, “to grow late,” formed with the transitive ending す; hence “to cause the night to grow late” or “to stay up late.”