さようなら "sayounara" (goodbye, politely)
またね "mata-ne" (see you later, casually)
じゃあね "jaa-ne" (well, then, casually)
sayonara
Adios
antio
Au revoir
Adios - Goodbye
Tot ziens!
yong cha yah
Hallo Totsiens
adios amigos
ラグビー ragubi hope it helped;)
You simply say "farvel", the danish equivalent of "farewell"...
We say "chao" or "hasta luego" or " no vemos manana" or "chabelas".