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
Hermokrates	-	Ancient Greek
FerkÓ	-	Hungarian
Winfrith	-	Anglo-Saxon (Latinized)
Heintje	HIEN-tyə	Dutch
Ziv	-	Hebrew
Vahid	-	Persian