know from Adam

not know somebody from Adam

to have never met someone and not know anything about them Why should I lend him money? I don't know him from Adam.

Name	Pronounced	Usage
Vega	-	Astronomy
Nix	[niks]
Eutychius	-	Ancient Greek (Latinized)
Rifat	-	Arabic
Eleutherius	-	Late Greek (Latinized)
Shahrivar	-	Persian Mythology