Where does “خوشمریم” come from?

خوشمریم (Ottoman Turkish) comes from Persian خوش, from Middle Persian xwš.

Ancestry of “خوشمریم”, step by step

StepLanguageWordMeaning
1Persianخوشhappy; pleasant
2Middle Persianxwš—
Every word from Middle Persian xwš →Every word from Persian خوش →