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.
Like one parent who’s too busy, another who doesn’t do deep conversations and a grandmother who’s like a closed book with a padlock on the front?
From Literature
Given founding members of the competition could not be 'relegated' from it, critics argued the tournament was a closed book for Europe's elite teams.
From BBC
Mr Ba may have been on the political scene for the last decade, but he is a bit of a closed book for most.
From BBC
“As you know, I’m not normally a closed book on this stuff,” Sean told me.
From Washington Post
When the bank collapsed, her loan was one of thousands sold by the government to so-called "closed book" lenders.
From BBC
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.
