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  What it means

  Literally “a Czech mistake.” Refers to a typo or small spelling error — particularly swapping or misplacing letters. The term reflects old Polish-Czech linguistic rivalry and teasing.

  Vocabulary

  • czeski — Czech
  • błąd — mistake / error

  Grammar note

  Simple noun phrase — adjective 'czeski' agrees with masculine noun 'błąd'.

  Cultural context

  Poles and Czechs have long poked fun at each other's languages. Czech is full of consonant clusters that look like typos to Polish eyes — hence the expression.

  Intermediate

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