Used attributively before a noun to denote something connected with parting or bedtime (e.g., "a bye-bye wave").
Translations
d'adieuS’emploie surtout dans des contextes familiers ou dirigés vers un enfant. He gave the crowd a cheerful bye-bye wave as he boarded the plane.
Il a adressé à la foule un gai geste d'adieu en montant dans l’avion.
Definitions
Relating to or suitable for a farewell; given, said, or used at parting (often informal or child-directed). He gave the crowd a cheerful bye-bye wave as he boarded the plane.