KNOW SB/STH INSIDE OUT


Meaning of KNOW SB/STH INSIDE OUT in English

know sb/sth inside out | know sb/sth like the back of your ˈhand

( informal ) to be very familiar with sth :

This is where I grew up. I know this area like the back of my hand.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.