adieux
a-dieux
noun
Formal expressions or acts of saying goodbye to someone.
"They exchanged their final adieux before departing."
interjection
An archaic or formal way of saying goodbye.
"Adieux, my friends, until we meet again."
Thesaurus
Synonyms: sayonara, adios, good-by, good day, au revoir, so long, bye-bye, cheerio, bye, arrivederci, goodbye, adieu