Where does “kʷeh₂” come from?

kʷeh₂ (Proto-Indo-European) comes from Proto-Indo-European kʷos, from Proto-Indo-European kʷ- — The primary interrogative root.

Ancestry of “kʷeh₂”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	kʷos	See *kʷis
2	Proto-Indo-European	kʷ-	The primary interrogative root

kʷeh₂ — Etymology, Origin & Word History | Etymology Explorer