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
Bertram	['bə:trəm]
Hypatos	-	Ancient Greek
Silvestra	-	Italian, Slovene
Norton	['nɔ:tən]
CuimÍN	-	Irish
Jody	JO-dee	English