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  What it means

  Literally “on a hedgehog” or “on edge like a hedgehog’s spines,” this vivid expression means to be on edge, irritable, or hypersensitive — ready to bristle at the slightest provocation. It evokes the image of a hedgehog with all its quills raised in defence. Poles use it to describe someone who is touchy, easily annoyed, or perpetually tense — a person you have to tread carefully around.

  Vocabulary

  • jeż — hedgehog
  • jeżu — hedgehog (locative singular)
  • na — on (preposition + locative when indicating position)

  Grammar note

  'Na jeżu' uses the preposition 'na' with the locative case — 'jeż' (nominative) → 'jeżu' (locative). The locative after 'na' indicates a state or position. The full idiom typically appears as 'być na jeżu' (to be on edge) or 'chodzić na jeżu' (to walk on eggshells around someone). It functions as a predicate: 'Ona jest teraz na jeżu' (She is on edge right now).

  Cultural context

  The expression is informal and colourful, common in everyday spoken Polish. It is similar in spirit to the English 'on edge,' 'touchy,' or 'prickly.' The hedgehog (jeż) image is culturally well-loved in Poland — jeże appear in folk tales and children's stories — so the metaphor feels natural and vivid rather than obscure.

  Intermediate

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