noun
a book or article that reveals previously undisclosed information
adjective
a type of book or article that reveals previously undisclosed information
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The author's tell-all book revealed many shocking details about his time in politics.
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Have you read that celebrity's tell-all memoir? It's so juicy!
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I heard she's planning to spill the tea in her tell-all interview next week.
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His tell-all attitude at work often gets him into trouble with his colleagues.