よくも私の

how dare you … my

→ 良く
phrase Rare #39,500
how dare you … my Expresses strong indignation or reproach. The phrase is followed by something belonging to the speaker; the person being reproached may be understood from context.
JA: よくも私の秘密をばらしたな!
EN: How dare you reveal my secret!

よくも私の評判に泥を!

How dare you sully my reputation!

— イップ・マン 序章 (2008)

よくも私の子を!

How dare you lay a hand on my child!

— ウィッチ (2016)

よくも私の調理場でずうずうしい!

How dare you be so brazen in my kitchen!

— レミーのおいしいレストラン (2007)