Meaning Of The Word A closed book

Real Dictionary

What's the definition of A closed book? Find A closed book meanings, definitions and more at the Real Dictionary online.

A closed book Meaning

A closed book Definition
A closed book Definition

What's The Definition Of A closed book?

a closed book
phrase: If you say that someone or something is a closed book, you mean that you do not know anything about them.

a closed book in British English
a person or subject that is unknown or beyond comprehension
something or someone that you know or understand very little about

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