Where does “Bacchānālia” come from?

Bacchānālia (Latin) comes from Latin Bacchānal, from Latin Bacchus, from Ancient Greek Βάκχος — Bacchus.

Ancestry of “Bacchānālia”, step by step

Step	Language	Word	Meaning
1	Latin	Bacchānal	—
2	Latin	Bacchus	the god of wine
3	Ancient Greek	Βάκχος	Bacchus

Bacchānālia — Etymology, Origin & Word History | Etymology Explorer