keep a secret

idiom

Definition of keep a secret

: to not tell anyone else information that is meant to be hidden from other people He knows how to keep a secret.

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“Keep a secret.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/keep%20a%20secret. Accessed 21 Oct. 2020.

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Britannica English: Translation of keep a secret for Arabic Speakers

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