Where does “ἀμφιδέω” come from?

ἀμφιδέω (Ancient Greek) comes from Ancient Greek ἀμφί, from Ancient Greek ὀξύς, from Proto-Indo-European h₂eḱ- — sharp.

ἀμφιδέω (Ancient Greek): To bind around

Definitions

ἀμφιδέω traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Ancient Greek	ἀμφί
2	Ancient Greek	ὀξύς	sharp, pointed; sharp, keen; quick, hasty, swift
3	Proto-Indo-European	h₂eḱ-	sharp

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