fu un errore

was a mistake

→ essere
phrase Rare #26,333
was a mistake Used to say that something done in the past was wrong or regretted. More formal/literary than the everyday phrase "è stato un errore".
IT: Accettare quell’offerta fu un errore.
EN: Accepting that offer was a mistake.

Assumere Tom fu un errore.

Hiring Tom was a mistake.

Sposare Tom fu un errore.

Marrying Tom was a mistake.

Fu un errore del computer.

It was a computer error.

Fu un errore.

It was a mistake.

— Una giornata particolare (1977)

Aiutarlo fu un errore.

Helping him was a mistake.

Uccidere Tom fu un errore.

Killing Tom was a mistake.

Aiutare Tom fu un errore.

Helping Tom was a mistake.

Aiutarla fu un errore.

Helping her was a mistake.

Venire qua fu un errore.

Coming here was a mistake.

Fu un errore restare.

It was a mistake to stay.