寝入 ねい
neiru

Godan Verb (ru)

1. to fall asleep

Intransitive
その あかちゃんは つかれて寝入 ねいった。
sono akachanwa nakitsukarete neitta.
The baby cried itself to sleep.
かれ はや ゆか いたが午前 ごぜん ちかくまで寝入 ねいれなかった。
karewa hayaku yukani tsuitaga gozen niji chikakumade neirenakatta.
He went to bed early but did not go to sleep until almost 2 in the morning.
Godan Verb (ru)

2. to sleep soundly

Intransitive
Godan Verb (ru)

3. to become dull; to lose vigour; to slacken

Intransitive
Other forms: