What Does "Closed Book" Mean?
"Closed book" is an English idiom. It means "something not understood or known; something mysterious or puzzling."Examples in Sentences
Here are three examples of the idiom "closed book" used in a sentence:- Quantum physics remains a closed book to most people.
- She's a closed book, and I can't ever tell what she's thinking.
- That chapter of my life is a closed book now, and I don't wish to revisit it.
What Is an Idiom?
An idiom is a commonly used expression whose meaning does not relate to the literal meaning of its words. In other words, if you were to translate "Closed Book" word for word, there is no guarantee the translation would help you to understand the meaning.An idiom often includes a cultural or historical context that makes it difficult for non-native English speakers to understand. A phrase is classified as an idiom when a direct translation of the words does not reveal the meaning. Most idioms rely on shared knowledge or experiences known only to a specific community.
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