Proto-Indo-European
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Fragment of a discussion from User talk:Rua
It could be related to the *-nos in *(h)óy(h)nos, and then the *mey- would be an e-grade of the PIE *moy. But I don't know how the *-nos suffix works, and it seems to be in free variation with *-kos and *-wos. Is it a known suffix?