köken: Literally, “until our reunion; that we may see again”. Probably a calque of French au revoir. Compare further Italian arrivederci, German Low German up Wiederseihen (Paderbornisch), Dutch tot ziens, English until we meet again and see you, and similar forms in many languages of the world.
eş: à la prochaine, à la revoyance, à la revoyure, à plus, adieu, à revoir
köken: Literally, “until the reseeing”. Ultimately from Latin ad + Latin illum + Latin re- + Latin videō. Cognate with Italian arrivederci. Compare Spanish hasta la vista as well as parallel and more distant cognate Bulgarian довиждане (doviždane), Russian до свида́ния (do svidánija).