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  What it means

  Literally “what day” but used idiomatically to mean “every day” or “each day.” It is a common adverbial phrase indicating daily regularity, equivalent to “każdego dnia” (every day). Poles use it in everyday speech to describe habits, routines, or recurring events. For example, “Chodzę na spacer co dzień” means “I go for a walk every day.”

  Vocabulary

  • co — every, each (distributive use)
  • dzień — day (nominative singular)
  • co dzień — every day, each day, daily

  Grammar note

  The word 'co' here is a distributive particle (not a question word), and it takes the nominative or accusative form of the time word. 'Dzień' is in the accusative (which looks the same as nominative for masculine inanimate nouns). Similar constructions exist: 'co tydzień' (every week), 'co rok' (every year), 'co godzinę' (every hour — accusative of 'godzina').

  Cultural context

  This is a neutral, everyday phrase used by all age groups. It is slightly less formal than 'każdego dnia' but both are perfectly acceptable. The distributive 'co + time unit' construction is very productive in Polish and worth learning as a pattern. Equivalent to 'every day' in English.

  Beginner

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