Yes, Muammar. "Adiós" comes from "A Dios"...
As poli notes already, you can find it in DRAE
http://lema.rae.es/drae/
Good luck!
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Lo propio de la verdad es que se basta a sí misma, aquel que la posee no intenta convencer a nadie.
"An enemy is somebody who flatters you. A friend is somebody who criticizes the living daylights out of you."
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