closed book

closed book
Meaning: something that one knows or understands nothing about.
Example: I’m afraid that this new physics formula will always be a closed book to me.

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clear the decks ❯❮ out of the closet

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Idiom of the Day

ward off

Meaning: to prevent something from harming you

Example: Our government has doubled the number of soldiers at the border to ward off illegal immigrants. Read on

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