Don't judge a book by its cover when meeting new people.
you can't judge a book by its cover
idiom B1
It is not possible to make reliable judgments about things or people by considering external appearances alone.
Origin
first recorded 19th c. disputed originThe phrase in its modern form dates from the mid-20th century; the underlying idea appears earlier, e.g. in George Eliot's The Mill on the Floss (1860).
The restaurant looks plain from the street, but you can't judge a book by its cover because the food is amazing.
Although the candidate appeared nervous and unpolished during the interview, the manager remembered that you can't judge a book by its cover and hired him for his brilliant technical skills.
- 01
Barnaby Rudge
[Cockney slang]judge
- 02
beggars can't be choosers
Something is better than nothing: those who can't provide for themselves should accept whatever help is available.
- 03
blot one's copy book
To damage one's own reputation through bad behavior.
- 04
blow someone's cover
To reveal that someone's behavior, situation, or identity has been fabricated or deliberately misrepresented for an ulterior motive.
- 05
book burning
Any mass destruction, removal, or recalling of books, motion pictures, broadcasts, or electronic works as a form of censorship, especially motivated by religious or political objections to the material.
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book dumping
The practice of donating old used books that burden rather than assist communities.
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book in
To check in (to a hotel).
- 08
break cover
To disclose one's real thoughts and intentions.