not know somebody from Adam
成語所屬單字know
not know somebody from Adam — 慣用語
1. To not know who someone is at all.
1.慣用語
釋義
完全不認識
To not know who someone is at all.
例句
I've never met him; I don't know him from Adam.
She claims she knows me, but I don't know her from Adam.