Thesaurus results for CLOSED BOOKS

closed books

noun

plural of closed book

as in mysteries

something hard to understand or explain the couple's unorthodox marriage is definitely a closed book to those outside of the relationship

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Noun

There are more mysteries to unfurl in future episodes of Pet Cemetery Murders, starting with the isolated Grey Gardens–esque dynamic between Dorothy and her own mother, Grace, who opened the pet cemetery in 1946.

— Savannah Walsh, Vanity Fair, 12 Oct. 2026
As Halzen and countless other scientists have found over the years, Antarctica’s extreme conditions serve as a crucial gateway to understanding some of the greatest mysteries of the cosmos.

— Daniella McCahey, The Conversation, 12 Oct. 2026

Definition of mysteries

Noun

These novels are puzzles at their core, and using logic to solve the mystery before it’s revealed in the book is, to me, the main pleasure in reading them.

— New York Times, New York Times, 15 Oct. 2026
The next two puzzles seem, on the surface, to have nothing to do with the first two.

— Dana Mackenzie, Scientific American, 14 Oct. 2026

Definition of puzzles

Noun

Heather is left keeping both of their secrets while wondering what the hell is in the air this season.

— Tom Smyth, Vulture, 15 Oct. 2026
The mystery comedy, loosely inspired by the 1989 film starring Tom Hanks, follows a married couple whose move into the husband's childhood home exposes unsettling secrets in their seemingly quiet suburban neighborhood.

— Danielle Minnetian, FOXNews.com, 15 Oct. 2026

Definition of secrets

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“Closed books.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/closed%20books. Accessed 18 Oct. 2026.

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Synonyms of closed books

noun

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