adieu

/a.djø/
1.
interjection

farewell

goodbye (often implying finality or never seeing someone again)

Adieu, je ne reviendrai jamais ici.

Farewell — I will never come back here.

Synonyms:au revoir
2.
nounmasculine

a farewell; a (often final) goodbye; the act of saying goodbye

Il a prononcé un adieu émouvant devant sa famille.

He gave an emotional farewell in front of his family.

Synonyms:adieux, au revoir