open book

Nothing to hide

An open book is something or someone easily understood, with nothing hidden: Her face is an open book.

The metaphor suggests pages displayed for anyone to read.

An open-book exam allows students to consult their notes or textbooks.

To read someone like an open book is to perceive their thoughts or feelings effortlessly.

honesty

transparent

Allowing light through

readable · sincere · authentic · genuine · unpretentious · trustworthy · plain-spoken · unreserved · ingenuous · straightforward

readability

predictable

Able to be foreseen

clear · simple · obvious · uncomplicated · transparent · easily understood · straightforward · laid bare

literature

novel

New and unusual

binding · paperback · hardcover · manuscript · text · volume · tome · reading · cover · leaf

exam

test

Evaluative examination

untimed · take-home · resources · cheat sheet · study guide · textbook · lookup

Categories
Opposites
transparency/readability

open bookclosed book

Something completely incomprehensible

mystery · enigma · puzzle · riddle · cipher

emotional/interpersonal openness

open bookclosed book

Something completely incomprehensible

private person · introvert · poker face · man of mystery · lone wolf

concealment/disclosure

open bookclosed book

Something completely incomprehensible

guarded · secretive · private person · cagey · tight-lipped

Family

open, book, opening, books, booked, opened, booking, bookish, opens

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G