寝ねる (neru)

もう 寝ねよう。

Let's go to bed.

もう寝な。

Go to sleep already.

5時間寝た。

I slept five hours.

まだ寝てる。

She's still sleeping.

よく寝れた？

Did you sleep OK? // Were you able to sleep well?

寝てていいよ。

You don't have to get up.

5時間も寝た。

I slept five whole hours.

寝れば治るはず。

It should get better if you sleep. // I should be able to sleep it off.

寝る時メールして。

Text me when you're going to sleep.

授業中寝てしまった。

I fell asleep in class.

２時間しか寝てない！

I've only slept for two hours!

5時間しか寝てない。

I only slept five hours.