Where does “ദിലീപ്” come from?

ദിലീപ് (Malayalam) comes from Hindi दिलीप, from Sanskrit दिलीप, from Sanskrit द्वि-द्वीप, from Sanskrit द्वीप, from Proto-Indo-Iranian dwiHpás, from Proto-Indo-Iranian Hā́ps, from Proto-Indo-European h₂ep- — water, body of water.

Ancestry of “ദിലീപ്”, step by step

Step	Language	Word	Meaning
1	Hindi	दिलीप	—
2	Sanskrit	दिलीप	name of various kings, especially of
3	Sanskrit	द्वि-द्वीप	—
4	Sanskrit	द्वीप	island, peninsula, sandbank; division of the...
5	Proto-Indo-Iranian	dwiHpás	island
6	Proto-Indo-Iranian	Hā́ps	water
7	Proto-Indo-European	h₂ep-	water, body of water

Every word from Proto-Indo-European h₂ep- →Every word from Proto-Indo-Iranian Hā́ps →Every word from Proto-Indo-Iranian dwiHpás →