Where does “audeo” come from?

audeo (Latin) comes from Latin avidus, from Latin -idus, from Proto-Italic *-iðos.

Ancestry of “audeo”, step by step

Step	Language	Word	Meaning
1	Latin	avidus	Greedy, avaricious, covetous; Eager,...
2	Latin	-idus	tending to
3	Proto-Italic	*-iðos	—

audeo — Etymology, Origin & Word History | Etymology Explorer