Where does “amasiunculus” come from?

amasiunculus (Latin) comes from Latin amasius, 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.

amasiunculus (Latin): a little or petty male lover