Where does “vigile” come from?

vigile (Old French) comes from Latin vigilia, from Latin vigil, from Proto-Indo-European weǵ- — lively, awake; strong.

Ancestry of “vigile”, step by step

Step	Language	Word	Meaning
1	Latin	vigilia	watch, vigil; wakefulness; city guard,...
2	Latin	vigil	awake, watching, alert; watchman, guard,...
3	Proto-Indo-European	weǵ-	lively, awake; strong

vigile — Etymology, Origin & Word History | Etymology Explorer