Where does “mårdi” come from?

mårdi (Walloon) comes from Old French mardi, from Latin Martis dīēs, from Latin Mārs, from Proto-Indo-European -ḱos — -y, -ic.

mårdi (Walloon): Tuesday

Definitions

Step	Language	Word	Meaning
1	Old French	mardi	—
2	Latin	Martis dīēs	—
3	Latin	Mārs	—
4	Proto-Indo-European	-ḱos	-y, -ic

mårdi — Etymology, Origin & Word History | Etymology Explorer