Latin word autem comes from Proto-Indo-European *h₂ew (Again. Away from, off.)

Detailed word origin of autem

Dictionary entry	Language	Definition
*h₂ew	Proto-Indo-European (ine-pro)	Again. Away from, off.
*h₂ewti	Proto-Indo-European (ine-pro)
sive	Latin (lat)	On the other hand; but if. Or.
autem	Latin (lat)	But. Moreover, also. On the other hand, on the contrary, whereas. While, however.

Words with the same origin as autem