there is a couple thousand African languages.
You say "Good bye" in Yoruba language of the Western African origin as "Od'abo".
In Kisii language of African origin,"Kwaheri" has the meaning of "Goodbye" in English.
In Cebuano, you can say "paalam" to say goodbye.
Depends on what you want to say??
In Zuni, you can say "yawakwi" to say goodbye.
In Ibanag, you can say "Agyamanak!" to say goodbye.
I Will Say Goodbye was created in 1980.
In Swati, you can say "sala kahle" to say goodbye.
In Dene, you can say "Mahsi cho" to say goodbye.
In Kpelle, you can say "Ka boss" to say goodbye.
goodbye