Where does “δέων” come from?

δέων (Ancient Greek) comes from Ancient Greek δέω, from Proto-Indo-European deh₁- — to bind.

δέων (Ancient Greek): masculine nominative singular present active...

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	δέω	I bind, tie, fasten, fetter; To lack, need,...
2	Proto-Indo-European	deh₁-	to bind

δέων — Etymology, Origin & Word History | Etymology Explorer