Where does “Умар” come from?

Умар (Tajik) comes from Arabic عُمَر, from Arabic عَامِر, from Arabic عَمَرَ — to live a long life.

Ancestry of “Умар”, step by step

Step	Language	Word	Meaning
1	Arabic	عُمَر	long-lived; prosperous
2	Arabic	عَامِر	inhabited, populated, populous; crowded, filled;...
3	Arabic	عَمَرَ	to live a long life