by the book

idiom

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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Cite this Entry

“By the book.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/by%20the%20book. Accessed 4 Aug. 2020.

More from Merriam-Webster on by the book

Nglish: Translation of by the book for Spanish Speakers

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