Where does “festinandus” come from?

festinandus (Latin) comes from Latin festīnō, from Latin festinus, from Proto-Indo-European gʷʰen-, from Proto-Indo-European bʰon-.

Definitions

Step	Language	Word	Meaning
1	Latin	festīnō	—
2	Latin	festinus	swift, quick, rapid, hasty; impatient; early,...
3	Proto-Indo-European	gʷʰen-	to strike, slay, kill
4	Proto-Indo-European	bʰon-	—

festinandus — Etymology, Origin & Word History | Etymology Explorer