closed book, a

Idioms & Phrases

closed book, a

A secret, mystery, or puzzle, as in I can't figure her out; she's a closed book to me. This term alludes to information one can't obtain or comprehend (because the book is closed). [Early 1900s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
Cite This Source
Explore Dictionary.com
Previous Definition: closed book
Next Definition: closed caption
Words Near: closed book, a
More from Thesaurus.com
Synonyms and Antonyms for closed book, a
More from Reference.com
Search for articles containing closed book, a
More from Dictionary.com Translator
Dictionary.com Word FAQs

Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.

Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature