you can't judge a book by its cover(redirected from cannot judge a book by its cover)
don't judge a book by its cover
Don't base your opinion of something (or someone) on the way it (or one) looks. This report may look dull, but don't judge a book by its cover—I will have you riveted by the facts and figures in no time! I know she dresses a little frumpy, but don't judge a book by its cover, man!
you can't judge a book by its cover
proverb You cannot determine or should not judge the true qualities or characteristics of someone or something just by assessing superficial details alone. He seemed like a bit of a jerk to me, but I guess you can't judge a book by its cover.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
judge a book by its cover, one can't
One can't rely on outward appearances to know what something or someone is really like. For example, He seems very quiet, but you can't judge a book by its cover. [First half of 1900s]
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
you can't judge a book by its coveror
you can't judge a book by the cover
You say you can't judge a book by its cover or you can't judge a book by the cover to mean that you should not judge someone or something by what they look like or what they seem like at first. If he loves her I'm happy for them. You can't judge a book by its cover. We may say that we don't believe in judging a book by the cover, but research has shown that we do, over and over again.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
don’t judge a ˌbook by its ˈcover(saying) used to say that you should not form an opinion about somebody/something from their appearance only: When we arrived we found that the hotel we’d booked looked awful, but as they say, you should never judge a book by its cover.
Farlex Partner Idioms Dictionary © Farlex 2017