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by the book

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Definition of by the book

: by following the official rules very strictly My boss insists on doing everything by the book.

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“By the book.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/by%20the%20book. Accessed 14 Jun. 2021.

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Nglish: Translation of by the book for Spanish Speakers

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