soy incapaz de

I am unable to

→ ser

phrase Rare #30,928

I am unable to Used with an infinitive to say that the speaker cannot or is incapable of doing something. It can sound stronger or more formal than simply “no puedo.”

SP: Soy incapaz de recordar su nombre.

EN: I am unable to remember his name.

Me temo que soy incapaz de traducir esa frase porque no la entiendo.

I'm afraid I can't translate that sentence because I don't understand it.

Soy incapaz de concentrarme.

I can't concentrate.

Soy incapaz de recoger toda la hierba.

I’m unable to pick up all the grass.

Soy incapaz de ganar a Tom al ajedrez.

I can't beat Tom at chess.

A veces soy incapaz de pintar.

Sometimes I am unable to paint.

— Nicky, la aprendiz de bruja (1989)

Soy incapaz de permanecer concentrado.

I’m incapable of staying focused.

Es terrible, soy incapaz de tirar nada.

It's terrible, I'm incapable of throwing anything away.

— Deseando amar (2000)

Soy incapaz de darle una respuesta inmediata.

I am unable to give you an immediate answer.

Soy incapaz de nadar.

I can't swim.