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  What it means

  Literally “to act like a red rag to a bull.” Describes something that instantly provokes anger or an aggressive reaction in someone. Direct equivalent of the English expression.

  Vocabulary

  • działać — to act, to work, to have an effect
  • płachta — cloth, rag, sheet
  • byk — bull

  Grammar note

  'Na byka' uses the accusative after 'na', indicating the target of the effect.

  Intermediate

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