no sería capaz de

would not be able to

→ no
phrase Rare #27,991
would not be able to Used to express that someone would lack the ability or possibility to do something. It is followed by an infinitive.
SP: No sería capaz de hacer eso sin tu ayuda.
EN: I would not be able to do that without your help.

Si no fuera por el iPhone, yo no sería capaz de aprender japonés.

If it weren’t for the iPhone, I wouldn’t be able to learn Japanese.

Me pregunto qué le hizo pensar a Tom que no sería capaz de hacer eso.

I wonder what made Tom think he wouldn’t be able to do that.

Si no fuese por el iPhone, yo no sería capaz de aprender japonés.

If it weren't for the iPhone, I wouldn't be able to learn Japanese.

Yo no sería capaz de herir ni a una mosca, dejemos tranquila a Miss Agda.

I wouldn't be able to hurt even a fly, let's leave Miss Agda alone.

— Fresas salvajes (1957)

Tom pensó que Mary no sería capaz de ganar más de treinta dólares por hora.

Tom thought Mary wouldn’t be able to earn more than thirty dollars an hour.

Lo siento, pero creí que Profesor no sería capaz de hacerlo.

I'm sorry, but I didn't think Professor would be able to do it.

— Stalker (1979)

John no sería capaz de mentir.

John would not be capable of lying.

No sería capaz de responder algo así.

I wouldn't be able to answer something like that.

Alguien como tú no sería capaz de hacer eso.

Someone like you wouldn’t be capable of doing that.

Tom sabía que María no sería capaz de convencer a nadie.

Tom knew that María wouldn’t be able to convince anyone.

Si estuviera sola, no sería capaz de hacer nada.

If I were alone, I wouldn't be able to do anything.

— Broker (2022)