non ha potuto

couldn't

→ non
phrase Rare #44,335
couldn't The third-person singular past form of potere with non. It is usually followed by an infinitive and means that someone was unable to do something.
IT: Non ha potuto partecipare alla riunione.
EN: She couldn't attend the meeting.

Mia moglie non ha potuto venire.

My wife couldn't come.

Non ha potuto dirmi granché.

He couldn't tell me much.

— Diva (1981)

Davanti alla Madonna che non ha potuto proteggerlo.

In front of the Madonna who could not protect him.

— Carandiru (2003)

Non ha potuto smettere di sorridere.

He couldn't stop smiling.