goodbye
US /ɡʊdˈbaɪ/
UK /ɡʊdˈbaɪ/

1.
arrivederci, addio
used to express good wishes when parting or at the end of a conversation
:
•
She waved and said, "Goodbye!"
Ha salutato e ha detto: "Arrivederci!"
•
It was hard to say goodbye to my friends.
È stato difficile dire addio ai miei amici.