Can't (or don't) Judge a Book by Its Cover

Subscribe to Idioms Online on YouTube

Privacy | Contact

Subscribe to Idioms Online on YouTube

Also: Don't judge a book by its cover


Judge a book by its cover, one can't: You should not make decisions or form opinions based solely on outward appearance without knowing more about someone or something.


Both variants, using can't and don't are common.

"He wears t-shirts and jeans and drives a rusty pickup truck, but he runs a successful company. It just goes to show, you can't judge a book by its cover."

"I know you first impression of Jonothan was not good, but don't judge a book by its cover."


Used since the first half of the 1900's.

This idiom draws an analogy with deciding whether a book is good or bad by only looking at its cover, when, in fact, you cannot really judge the quality of a book without reading it.

More Can't Idioms

More Can't Idioms

More Cover Idioms

More Cover Idioms

This page contains one or more affiliate links. See full affiliate disclosure.

© 2018 by IdiomsOnline.