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
Synonyms & Similar Words
Relevance
Example Sentences
Recent Examples of Synonyms for closed books
Noun
-
As the press release concludes, tropical forests are full of mysteries waiting to be discovered.—
Maria Mocerino,
Interesting Engineering,
25 Mar. 2025 -
The story feels like mysteries within a mystery given there are so many staff stories.—
Lexy Perez,
The Hollywood Reporter,
24 Mar. 2025
Noun
-
Discover the secrets of these stunning blooms.—
Joe Rassel,
Orlando Sentinel,
26 Dec. 2024
-
French women perfume secrets Naturally, French women have been either applying their regular perfume to their hair or using hair fragrance for years.—
Ana Morales,
Vogue,
26 Dec. 2024
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.
Cite this Entry
“Closed books.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/closed%20books. Accessed 26 Jul. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share