know (something) backward

know (something) backward

To be extremely familiar with a particular subject, field, or piece of writing, film, music, etc. Primarily heard in US. I've read this book so many times, I know it backward. You should ask Samantha about your problem—she knows car engines backward.
See also: backward, know
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
See also:
Full browser ?