寝れば

to sleep; to go to sleep

→ 寝る
寝れ to sleep + ば conditional
verb · informal Rare #36,864
to sleep; to go to sleep 寝れば is the conditional form of 寝る: “if you sleep.” With いい, it can make a casual suggestion: “you can just go to sleep.”
JA: 眠いなら、寝ればいいじゃん。
EN: If you’re sleepy, you can just go to sleep.
Conjugation of 寝る

エリアナがマルセロとバビウと一緒に寝ればいい

Eliana should sleep with Marcelo and Babiu.

— アイム・スティル・ヒア (2024)

眠いなら寝ればいいじゃん。

If you're sleepy, why don't you just go to sleep?

私の布団で寝ればいい

You can sleep in my bed.

— 万引き家族 (2018)

ゆうべもここで寝ればそんな…

If only I'd slept here last night too, then I wouldn't have...

— マルホランド・ドライブ (2001)