Definition of schoolboy error in English:

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schoolboy error


British informal
A very basic or foolish mistake.
Example sentences
  • His book Problems of Leninism is an eclectic compilation, full of schoolboy errors.
  • Accusing respected clergymen of lying was a political schoolboy error.
  • You are not going to win games making schoolboy errors.

For editors and proofreaders

Line breaks: school|boy error

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