Meaning of the word "by the book" in English

What does "by the book" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

by the book

US /baɪ ðə bʊk/
UK /baɪ ðə bʊk/
"by the book" picture

Idiom

1.

strictly according to the rules or established procedures

Example:
We have to do everything by the book to avoid any legal issues.
The manager always runs the department strictly by the book.
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