te decepcionaré

I will disappoint you

→ te
phrase Rare #37,793
I will disappoint you “Te” is the informal singular form of “you” as the person affected. “Decepcionaré” is the first-person singular future tense of “decepcionar.”
SP: No te decepcionaré.
EN: I won't disappoint you.

Nunca te decepcionaré.

I will never disappoint you.

No te decepcionaré otra vez.

I won't let you down again.

— El duelo (2006)

Solo quiero que sepas que no te decepcionaré.

I just want you to know that I won't let you down.

No te decepcionaré.

I won't let you down.