pay dearly
US /peɪ ˈdɪrli/
UK /peɪ ˈdɪrli/

1.
pagare cara, subire gravi conseguenze
to suffer greatly as a result of something you have done
:
•
He will pay dearly for his mistakes.
La pagherà cara per i suoi errori.
•
If you betray their trust, you will pay dearly.
Se tradisci la loro fiducia, la pagherai cara.