Where does “counter-” come from?

counter- (Middle English) comes from Old French countre-, from Old French contre, from Latin contrā, from Latin ubī, from Latin cubī, from Proto-Italic *kʷuðei — where.

Ancestry of “counter-”, step by step

Step	Language	Word	Meaning
1	Old French	countre-	Alternative form of contre-
2	Old French	contre	against
3	Latin	contrā	against
4	Latin	ubī	where? in what place?, in which place?
5	Latin	cubī	—
6	Proto-Italic	*kʷuðei	where

Words derived from “counter-”

counter-

Every word from Proto-Italic *kʷuðei →Every word from Latin cubī →Every word from Latin ubī →