write the book

verb

To be an authoritative expert on some specified topic.

“Do I know how to play chess? I wrote the book on it!”

Meanings

verbwrite the book (third-person singular simple present writes the book, present participle writing the book, simple past wrote the book, past participle written the book)

present singular third person writes the book · participle present writing the book · past wrote the book · participle past written the book

  1. colloquialidiomaticwith onTo be an authoritative expert on some specified topic.

    Do I know how to play chess? I wrote the book on it!

Cite this entry
APA

write the book. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/write%20the%20book

MLA

“write the book.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/write%20the%20book. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “write the book,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/write%20the%20book.

Source: write the book on Wiktionary, CC BY-SA 4.0.