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
Gentry	['dʒentri]
Natsuki	nah-tsoo-kee	Japanese
Bernardetta	-	Italian
Kerrie	KER-ee	English
Marcellino	mahr-chel-LEE-no	Italian
Maximiliaan	-	Dutch