Where does “mauvais” come from?

mauvais (Norman) comes from Old French malvais, from Latin malifātius, from Latin fātum, from Latin fātus, from Latin for, from Proto-Italic fāōr, from Proto-Indo-European bʰéh₂ti — to speak, to be talking.

mauvais (Norman): bad

Definitions

Ancestry of “mauvais”, step by step

Step	Language	Word	Meaning
1	Old French	malvais	bad, evil
2	Latin	malifātius	unfortunate
3	Latin	fātum	destiny, fate, lot
4	Latin	fātus	spoken, said, told, foretold, related, predicted; having or had spoken, etc
5	Latin	for	"defective"; I speak, talk, say
6	Proto-Italic	fāōr	speak
7	Proto-Indo-European	bʰéh₂ti	to speak, to be talking

Every word from Proto-Indo-European bʰéh₂ti →Every word from Proto-Italic fāōr →Every word from Latin for →