All closed book antonyms
closed book
C c noun closed book
- known — past participle of know1 .
- understanding — mental process of a person who comprehends; comprehension; personal interpretation: My understanding of the word does not agree with yours.
- simplicity — the state, quality, or an instance of being simple.
- solution — the act of solving a problem, question, etc.: The situation is approaching solution.
- confidence — If you have confidence in someone, you feel that you can trust them.
- harmony — agreement; accord; harmonious relations.