WordReference Random House Unabridged Dictionary of American English © 2025
o′pen book′, 
  1. someone or something easily understood or interpreted;
    something very clear:The child's face is an open book.
  • 1850–55

'open book' also found in these entries (note: many are not synonyms or translations):
book - bookrack - bookrest - gutter - recto - verso

Forum discussions with the word(s) "open book" in the title:


Look up "open book" at Merriam-Webster
Look up "open book" at dictionary.com
  • Go to Preferences page and choose from different actions for taps or mouse clicks.

In other languages: Spanish | French | Italian | Portuguese | Romanian | German | Dutch | Swedish | Russian | Polish | Czech | Greek | Turkish | Chinese | Japanese | Korean | Arabic

Advertisements
Advertisements
Report an inappropriate ad.
WordReference.com
WORD OF THE DAY
GET THE DAILY EMAIL!

Become a WordReference Supporter to view the site ad-free.