Idiom
closed book
Meaning
A person or thing that cannot be easily understood; someone or something incomprehensible or puzzling.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
Examples
“He is a closed book to me.”
“I have worked with him for years, but he remains a closed book regarding his personal life.”
“Despite her outward friendliness, she remained a closed book, leaving her colleagues to wonder about the true motivations behind her sudden resignation.”
Examples
simple
“He is a closed book to me.”
contextual
“I have worked with him for years, but he remains a closed book regarding his personal life.”
complex
“Despite her outward friendliness, she remained a closed book, leaving her colleagues to wonder about the true motivations behind her sudden resignation.”
Key words
Related idioms
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