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
Ambrosi	-	Georgian
Heraclius	-	Ancient Greek (Latinized)
Melvyn	MEL-vin	English
Chinyelu	-	Western African, Igbo
Trecia	-	English (Rare)
Theodotos	-	Ancient Greek