by the book
1 of 1phrase/baɪ ðə bʊk/
1
strictly adhering to established rules, procedures, or standardized practices
C1The origin of the idiom "by the book" draws from the idea of following instructions or guidelines found in a book or manual, which can be traced back to ancient times. This phrase may have gained prominence during the 19th century, as the use of written rules and regulations became more widespread in various fields. It is commonly used in discussions related to law, regulations, policies, and professional practices.
- The detective solved the case by the book, meticulously gathering evidence and following every procedure.
- The teacher graded the exams by the book, using the established criteria and marking scheme.
- The auditor conducted a thorough review of the financial records, ensuring that everything was done by the book.
- The jury deliberated carefully, ensuring that their verdict was reached by the book, considering the evidence and applicable laws.
- The project manager emphasized the importance of completing the project by the book, adhering to the agreed-upon timeline and deliverables.