goodbye
US /ɡʊdˈbaɪ/
UK /ɡʊdˈbaɪ/

1.
au revoir, adieu
used to express good wishes when parting or at the end of a conversation
:
•
She waved and said, "Goodbye!"
Elle a agité la main et a dit : "Au revoir !"
•
It was hard to say goodbye to my friends.
C'était difficile de dire au revoir à mes amis.