Where does “contre-cœur” come from?

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

Ancestry of “contre-cœur”, step by step

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