Where does “دکھ” come from?

دکھ (Urdu) comes from Sanskrit दुःख, from Sanskrit दुस्-, from Proto-Indo-Aryan duš-, from Proto-Indo-Iranian duš-, from Proto-Indo-European dus-, from Proto-Indo-European dēwǝ- — to fail, be behind, be lacking.

دکھ (Urdu): sadness, grief

Definitions

sadness, grief

Ancestry of “دکھ”, step by step

Step	Language	Word	Meaning
1	Sanskrit	दुःख	sorrow, distress, suffering, grief, misery,...
2	Sanskrit	दुस्-	ill-, mal
3	Proto-Indo-Aryan	duš-	—
4	Proto-Indo-Iranian	duš-	bad
5	Proto-Indo-European	dus-	bad
6	Proto-Indo-European	dēwǝ-	to fail, be behind, be lacking

Every word from Proto-Indo-European dēwǝ- →Every word from Sanskrit दुस्- →Every word from Proto-Indo-European dus- →