Laxi Dictionary

American Dictionary

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Definition a closed book in American English

a closed book phrase

phrase
1

something that you accept has completely ended

Example

As far as she is concerned, her marriage is a closed book.

Synonyms and related words
finished completed exhausted
2

something or someone that is very difficult to understand

Example

I'm afraid accountancy is a closed book to me.

Synonyms and related words
mystery riddle uncertainty
Definition a closed book in American English