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

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Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Morgan has been an open book about her appearance as of late. — Michelle Lee, PEOPLE, 1 May 2026 Without encryption, your internet traffic would be an open book for anyone to read, including bad actors. — Anand Oswal, Forbes.com, 2 Sep. 2025 But for those who have questions, or want to know more about colon cancer — especially prevention — Saim is there, an open book on his podcast and social media. — Lisa Gutierrez, Kansas City Star, 15 Apr. 2026 On it lies an open book, overlooked by a portrait on the wall of the late Iranian Supreme Leader Ayatollah Ali Khamenei. — CBS News, 12 Mar. 2026 See All Example Sentences for an open book

Rhymes for an open book

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Browse Nearby Words

anonymuncule
an open book
anopheles
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Cite this Entry

“An open book.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/an%20open%20book. Accessed 7 Jul. 2026.

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