mistakenly
US /mɪˈsteɪ.kən.li/
UK /mɪˈsteɪ.kən.li/

1.
erroneamente, per sbaglio
in a way that is based on a wrong belief or is not correct
:
•
I mistakenly thought the meeting was tomorrow.
Ho erroneamente pensato che la riunione fosse domani.
•
He mistakenly picked up the wrong bag at the airport.
Ha erroneamente preso la borsa sbagliata all'aeroporto.