By the book

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adjective

In an official or approved manner, usually following rules or procedures very closely.

She always does her homework by the book.
Visual representation of "by the book" - In an official or approved manner, usually following rules or procedures very closely.

Often appears as...

  • do by the book
  • operate by the book

Usage tips

Idiomatic

Definition 1 of 2
Visual representation of "by the book"
LampPro Tip 1/3

Adherence to Rules

This phrase emphasizes strict adherence to established procedures, often in bureaucratic or formal contexts.

Illustration for Adherence to Rules
The auditor went by the book and found several discrepancies.
LampPro Tip 2/3

Lack of Flexibility

It implies that a person is not willing to improvise or deviate from established standards, even when a situation might suggest it.

Illustration for Lack of Flexibility
Despite the unusual circumstances, she insisted on doing everything by the book.
LampPro Tip 3/3

Negative Connotation

Sometimes implies being overly strict or unimaginative, especially when flexibility could lead to better outcomes.

Illustration for Negative Connotation
His by-the-book approach often frustrates his creative team members.
Visual representation of the word "By the book"

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