Yes, there are common (and
Yes, there are common (and quite complex) Indo-European roots with connotations of "to protect, to spare; to like, to love".
Here's what my digital English dictionary has on
free
ORIGIN Old English frēo (adjective), frēon (verb), of Germanic origin; related to Dutch vrij and German frei, from an Indo-European root meaning ‘to love,’ shared by friend .


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