Where does “कामसूत्र” come from?

कामसूत्र (Sanskrit) comes from Sanskrit काम, from Proto-Indo-Iranian káHmas, from Proto-Indo-European kóh₂-mo-s, from Proto-Indo-European keh₂- — to desire, wish.

Ancestry of “कामसूत्र”, step by step

Step	Language	Word	Meaning
1	Sanskrit	काम	wish, desire, longing; love, affection, object of...
2	Proto-Indo-Iranian	káHmas	wish, desire
3	Proto-Indo-European	kóh₂-mo-s	—
4	Proto-Indo-European	keh₂-	to desire, wish

Words derived from “कामसूत्र”

Kama Sutra
Камасутра
कामसूत्र
کاما سوترا

Every word from Proto-Indo-European keh₂- →

कामसूत्र — Etymology, Origin & Word History | Etymology Explorer