Where does “portier” come from?

portier (Middle Dutch) comes from Old French portier, from Old French porte, from Latin porta, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “portier”, step by step

Step	Language	Word	Meaning
1	Old French	portier	—
2	Old French	porte	door
3	Latin	porta	gate, especially of a city; entrance, passage,...
4	Proto-Indo-European	per-	before, in front; first; to go through
5	Proto-Indo-European	pr̥tós	passed , crossed

Words derived from “portier”

portier
portir

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Latin porta →