Where does “marital” come from?

Marital comes from French marital, meaning relating to marriage or a husband.

marital (English): Pertaining to marriage; Pertaining to a husband

Definitions

Step	Language	Word	Meaning
1	Middle French	marital	—
2	Latin	maritalis	matrimonial, nuptial, marital, conjugal
3	Latin	marītus	—
4	Latin	mās	—
5	Proto-Nuristani	*māsa	—
6	Proto-Indo-Iranian	mā́Has	moon; month
7	Proto-Indo-European	mḗh₁n̥s	moon; month
8	Proto-Indo-European	meh₁-	to measure

marital — Etymology, Origin & Word History | Etymology Explorer