Where does “dicere” come from?

dicere (Latin) comes from Proto-Italic deikō, from Proto-Indo-European deyḱ- — to point out.

Ancestry of “dicere”, step by step

Step	Language	Word	Meaning
1	Proto-Italic	deikō	show, indicate; refer to; say, tell
2	Proto-Indo-European	deyḱ-	to point out

dicere — Etymology, Origin & Word History | Etymology Explorer