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
Takouhi	-	Armenian
Lynne	[lin]
Emilian	-	Romanian
Cynesige	-	Anglo-Saxon
Tyr	TIR	Norse Mythology
Sender	-	Yiddish