負けだ

have lost

→ 負け
phrase Rare #20,813
have lost Used to declare that someone has lost or been defeated; the person who lost is often named before 負けだ.
JA: 今回は私の負けだ。
EN: I lost this time.

私の負けだ。

I admit defeat.

君には負けた僕の負けだ

You beat me. I admit defeat.

— きっと、うまくいく (2009)

私の負けだ

I admit defeat.

— イップ・マン 序章 (2008)

どっちにしろ、お前の負けだ。

Either way, you lose.

あ~負けだ負け~!

Ahh, I lost! I lost!

— Cosmic Princess Kaguya! (2026)

ボロ負けだ!

We got completely crushed!

— ピエロがお前を嘲笑う (2014)