Where does “arbiträr” come from?

arbiträr (German) comes from French arbitraire, from Italian arbitrario, from Latin arbitrarius, from Latin -ārius, from Proto-Italic *-āzios.

arbiträr (German): arbitrary

Definitions

Step	Language	Word	Meaning
1	French	arbitraire	arbitrary
2	Italian	arbitrario	arbitrary
3	Latin	arbitrarius	arbitrating; arbitrary
4	Latin	-ārius	—
5	Proto-Italic	*-āzios	—

arbiträr — Etymology, Origin & Word History | Etymology Explorer