closed book
Americannoun
noun
-
something deemed unknown or incapable of being understood
-
a matter that has been finally concluded and admits of no further consideration
Etymology
Origin of closed book
First recorded in 1910–15
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“As you know, I’m not normally a closed book on this stuff,” Sean told me.
From Washington Post ● Apr. 26, 2023
When the bank collapsed, her loan was one of thousands sold by the government to so-called "closed book" lenders.
From BBC ● Mar. 1, 2023
When she was growing up, Xie said, stories about this era were a closed book.
From New York Times ● Sep. 19, 2022
A lot of the stuff we know as fact turns out to be closed book fiction, a version of the truth steeped in the memory and settled now as a matter of certainty.
From The Guardian ● Apr. 26, 2020
Put your hands together tight like a closed book.
From "A Step from Heaven" by An Na
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
