־ײַ

From Middle High German -īe.

־ײַ • (-ay) f or n

1. Place where characteristic activity is conducted.

   ‎בעקער (beker, “baker”) + ‎־ײַ (-ay) → ‎בעקערײַ (bekeray, “bakery”)

2. Used to create abstract nouns denoting a state, condition, or quality.

   ‎דאָקטער (dokter, “doctor”) + ‎־ײַ (-ay) → ‎דאָקטערײַ (dokteray, “medicine (profession)”)