an open book

noun

: a person or thing that is easy to learn about and understand

My life is an open book. I have nothing to hide.

Examples of an open book in a Sentence

Recent Examples on the Web

An 1812 portrait by Thomas Sully presented him with a long, downturned nose and corners of his mouth to match, leaning on one hand at his desk and gazing over the pages of an open book. — Leah Asmelash, CNN Money, 3 July 2026

America's an open book 📖 The United States is a biiiiiiiiiig country with destinations for every type of traveler. — Phaedra Trethan, USA Today, 2 July 2026

Today, Barrett tries to pay it forward through formal internal mentoring programs and by presenting herself as an open book for anyone interested in speaking with her. — Ian Servantes, Footwear News, 10 June 2026

Morgan has been an open book about her appearance as of late. — Michelle Lee, PEOPLE, 1 May 2026

Rhymes for an open book

• betook
• casebook
• chapbook
• checkbook
• chinook
• codebook
• cookbook
• fishhook
• forsook
• guidebook
• handbook
• logbook