Where does “amfa-” come from?

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

amfa- (Irish): amphi-

Definitions

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

amfa- — Etymology, Origin & Word History | Etymology Explorer