a closed book

(redirected from closed book)
Also found in: Dictionary, Thesaurus, Encyclopedia.

a closed book

Someone or something that is difficult to know or understand. She's such a private person that I don't know much about her. I guess she's a closed book. I'm a scientist, so art will always be a closed book to me.
See also: book, closed

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]
See also: closed

a closed book

BRITISH
If something or someone is a closed book to you, you know or understand very little about them. Economics were a closed book to him. He is such a closed book, that guy. Compare with an open book.
See also: book, closed

a closed book

a thing of which you have no knowledge or understanding.
1944 Frank Clune The Red Heart The desert is an open book to the man of the Vast Open Spaces, but to the schoolmaster it was a closed book.
See also: book, closed

a closed ˈbook (to somebody)

a person or a subject that you know nothing about: I’m afraid geophysics is rather a closed book to me.Please let’s not talk about her former life, that’s all a closed book now.
See also: book, closed
References in periodicals archive ?
On second thoughts, it may be wiser for Cheryl to keep her marriage secrets to the England and Chelsea defender a closed book now that they have patched things up.
And in telling the story of a life that takes up most of the 20th century, he casts light on the way the Arab world works and thinks, which, for so many of us today, is a closed book.
The specific service standards are a closed book. We hold onto those for proprietary reasons.
Christian Democrat Prime Minister Jan Peter Balkenende described these comments as "pertinent", insisting the debate on nuclear power is not a closed book. A firm decision to maintain the facility in service has until now been blocked by one of the members of the ruling coalition in The Hague, the D66Liberal party.
"As chair, part of my position is to reinforce the message that CalCPA is not a closed book," he says.
The history of the Red Army Faction may seem on first glance a closed book, not least because this terrorist organization announced its dissolution in 1998.
Mrs Ford said: 'We would like the list of those buried in the cemetery to be kept in the chapel so it's not a closed book.
These deals included a $140m deal with HBOS in October to provide it with paper-clearing and check-clearing processes, a $450m deal with Royal & SunAlliance in February to run its closed book claims processing, and a $400m deal with Washington Mutual last December to provide outsourced check-processing and document-imaging services.
First, medicine is not, nor should it ever be practiced as, a closed book. A closed book test provides no educational benefit and simply perpetuates the learning style of rote memorization, which, in the age of modem medicine, is obsolete.
When it comes to open and closed book management styles, which one is best?
The waves are so sensitive that they could differentiate between the paper and ink on a page of a closed book, Ananova reports.
Concert dance will not be a closed book for Lewitzky.
They will include many to whom Anglo-Saxoa England is not an open book, they will include more to whom pedantic textual and historical, medieval scholarship is a firmly closed book. If they read some of the better items in the bibliographical lists, and understand the underlying seriousness of the author of this book they may be brought to see in Old English poetry and its scholarship, in so far as they are able to sample it, a world not represeated elsewhere in their studies.
"Much about these fast-changing markets is a closed book to most people.
Part of the Monument Re Group, Monument Assurance Belgium operates as a closed book consolidator of life portfolios in Belgium under the supervision of the National Bank of Belgium.