もう帰った

already went home

→ もう
phrase Rare #24,604
already went home もう means “already” in questions and statements about whether someone has gone home. In もう帰った方がいい, the phrase means “you should go home now.”
JA: みんなもう帰ったよ。
EN: Everyone has already gone home.

もう帰った方がいいよ

You should probably head home now.

もう帰ったからもう安心だ

They’ve already gone home, so I can relax now.

もう帰った

Are you home already?

— ワンス・アポン・ア・タイム・イン・ハリウッド (2019)

他のみんなもう帰った

Everyone else has already gone home.

— ブエノスアイレス (1997)

トムもう帰ったけどメアリーはまだここにいる

Tom has already gone home, but Mary is still here.

もう何でもう帰った

Why did you go home already?

もう帰った方がいいんじゃない

Maybe you should head home.

もう帰ったはずなのにもう嫌だ

I should have gone home already, but I can’t take it anymore.