Where does “overt” come from?

overt (Middle English) comes from Middle French ouvert, from Old French overt, from Old French ovrir, from Vulgar Latin operire, from Latin aperīre, from Latin aperiō, from Proto-Indo-European h₂epó — off, away.

Ancestry of “overt”, step by step

overt traces back through two separate lines of ancestry.

via Middle French ouvert

Step	Language	Word	Meaning
1	Middle French	ouvert	past participle of ouvrir
2	Old French	overt	past participle of ovrir
3	Old French	ovrir	to open
4	Vulgar Latin	operire	—
5	Latin	aperīre	—
6	Latin	aperiō	to uncover, make or lay bare, reveal, clear
7	Proto-Indo-European	h₂epó	off, away

via Anglo-Norman overt

Step	Language	Word	Meaning
1	Anglo-Norman	overt	past participle of ovrir
2	Old French	ouvert	—
3	Old French	ouvrir	—

Words derived from “overt”

overt
overtly
overtness
nonovert
semiovert
unovert

Every word from Proto-Indo-European h₂epó →Every word from Latin aperiō →Every word from Latin aperīre →