Translation of "Dearly" in Spanish

She loves her son dearly.

Ella quiere con locura a su hijo.

He dearly loves his school.

A él le encanta su escuela.

You'll pay dearly for it!

¡Esto te va a costar caro!

- His mistakes cost him dear.
- His errors cost him dearly.

Su error costó caro.

- He dearly loves his school.
- He likes his school a lot.

- A él le gusta mucho su escuela.
- A él le encanta su escuela.

His political views cost him dearly:  Saint-Cyr was side-lined for several years,  

Sus puntos de vista políticos le costaron caro: Saint-Cyr estuvo al margen durante varios años,

- You'll pay for that.
- That will cost you dearly.
- You will pay for that.
- You'll regret that.
- You will regret that.

Tú pagarás por eso.