By-the-book

Full definition of by-the-book

Adjective

1. (idiomatic) Adhering strictly to rules, legal requirements, or official procedures.
• 2007, David von Drehle, "Bobby Jindal," Time, 11 Dec.,Given the troubled Bayou State's long history of rogues and demagogues, the most unusual thing about Gov. Jindal may be his record of by-the-book ethics.

Related terms

• by the book (adv.)