Where does “ornament” come from?

ornament (Middle English) comes from Old French ornement, from Latin ornāmentum, from Latin ornō, from Latin ōrdnō, from Latin ōrdō, from Proto-Italic ored(h)- — to arrange.

Ancestry of “ornament”, step by step

Step	Language	Word	Meaning
1	Old French	ornement	ornament
2	Latin	ornāmentum	equipment, apparatus, furniture
3	Latin	ornō	to furnish, equip, outfit, prepare
4	Latin	ōrdnō	—
5	Latin	ōrdō	a methodical series, arrangement, or order; regular line, row, or series
6	Proto-Italic	ored(h)-	to arrange

Words derived from “ornament”

Every word from Proto-Italic ored(h)- →Every word from Latin ōrdō →Every word from Latin ōrdnō →