open book Rate this phrase:(0.00 / 0 votes)
A person who through naivete responds candidly to questions or openly displays their emotions or intentions.

Additional definitions for 'open book':

open bookSomething of which salient aspects are obvious or easily interpreted.
open bookAn open book decomposition.
open bookAn inside angle in the rock.
See them all »


Find a translation for the open book phrase in other languages:

Select another language:

Nearby phrases

Some more phrases from our dictionary similiar to open book

Discuss this open book phrase with the community:


Use the citation below to add this open book definition to your bibliography:


"open book." STANDS4 LLC, 2018. Web. 19 Oct. 2018. <>.

We need you!

Help us build the largest human-edited phrases collection on the web!

Thanks for your vote! We truly appreciate your support.