Where does “incident” come from?

incident (Latin) comes from Latin incido, from Latin in-, from Latin in, from Old Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

incident (Latin): third-person plural future active indicative of...

Definitions

Step	Language	Word	Meaning
1	Latin	incido	I fall or drop into or upon something; I fall...
2	Latin	in-	un-, non-, not; in, within, inside
3	Latin	in	in, at, on, upon, from; within, while in; into,...
4	Old Latin	en	in
5	Proto-Italic	en	in
6	Proto-Indo-European	h₁én	in