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Defenition of the word closed book

    • Defenition of the word closed book

      • something that baffles understanding and cannot be explained; "how it got out is a mystery"; "it remains one of nature's secrets"
      • something that baffles understanding and cannot be explained; "how it got out is a mystery"; "it remains one of nature''s secrets"
      • something that baffles understanding and cannot be explained

    Synonyms for the word closed book

      • enigma
      • mystery
      • secret

    Hypernyms for the word closed book

      • perplexity

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