Where does “amar” come from?

amar (Spanish) comes from Old Spanish amar, from Latin amō, from Latin Deus, from Latin dẹ̄vos, from Old Latin deivos, from Proto-Italic deiwos, from Proto-Indo-European deywós, from Proto-Indo-European dyew- — to be bright; sky, heaven.

amar (Spanish): to love, have great affection for, care about