Where does “dublu” come from?

dublu (Romanian) comes from French doublé, from Middle French double, from Old French doble, from Latin dūplus, from Proto-Italic *duplos.

dublu (Romanian): double

Definitions

Step	Language	Word	Meaning
1	French	doublé	double, brace, pair; double; doublé
2	Middle French	double	—
3	Old French	doble	double
4	Latin	dūplus	—
5	Proto-Italic	*duplos	—

dublu — Etymology, Origin & Word History | Etymology Explorer