Where does “doceō” come from?

doceō (Latin) comes from Proto-Italic dokeō, from Proto-Indo-European deḱ- — take; perceive.

Ancestry of “doceō”, step by step

Step	Language	Word	Meaning
1	Proto-Italic	dokeō	tell, inform; teach, instruct
2	Proto-Indo-European	deḱ-	take; perceive

doceō — Etymology, Origin & Word History | Etymology Explorer