Thesaurus

closed book

Synonyms and Antonyms of closed book

something hard to understand or explain
  • the couple's unorthodox marriage is definitely a closed book to those outside of the relationship
Synonyms of closed book
Words Related to closed book

Learn More about closed book


Seen and Heard

What made you want to look up closed book? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

characterized by aphorism

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!