What are some alternative words for closed book?

Synonyms for closed book

This thesaurus page is about all possible synonyms, equivalent, same meaning and similar words for the term closed book.

Princeton's WordNet

  1. mystery, enigma, secret, closed book(noun)

    something that baffles understanding and cannot be explained

    "how it got out is a mystery"; "it remains one of nature's secrets"

    arcanum, brain-teaser, whodunit, conundrum, riddle, secret, closed book, enigma, mystery, mystery story


  1. closed book(noun)

    open book

  2. closed book(noun)

    A person or thing that cannot be easily understood; someone or something incomprehensible or puzzling.

    open book


Find a translation for the closed book synonym in other languages:

Select another language:

Images & Illustrations of closed book

     Images & Illustrations of closed book Images & Illustrations of closed book Images & Illustrations of closed book

Discuss these closed book synonyms with the community:


Use the citation below to add these synonyms to your bibliography:


"closed book." Synonyms.net. STANDS4 LLC, 2017. Web. 11 Dec. 2017. <http://www.synonyms.net/synonym/closed book>.

Are we missing a good synonym for closed book?

Nearby & related entries:

Alternative searches for closed book:

Thanks for your vote! We truly appreciate your support.