Where does “کمزور” come from?

کمزور (Persian) comes from Persian زور, from Parthian zʿwr.

کمزور (Persian): powerless; forceless; weak

Definitions

Step	Language	Word	Meaning
1	Persian	زور	libation; force, strength, power, might;...
2	Parthian	zʿwr	—

کمزور — Etymology, Origin & Word History | Etymology Explorer