Which of these does not mean 'goodbye'?

Goodbye used to be a sentence in English. “God be with ye.” In hundreds of years, it merged into one word.

bye... power of knowledge in one sec... how silly!

am a French student...failed this one...what was I thinking...lol

They didn't have room for another one that's almost a loan word in American English at least; "sayonara." The old Lawrence Well show always concluded with a number that included; "Adios, Au Revoir, Auf Wiedersehn."

Player #33717691, and hardest to learn