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  What it means

  Literally “on black / in black.” Means off the books, illegally, without declaring to authorities — “under the table,” “cash in hand,” “off the books.” E.g. “pracować na czarno” — to work illegally/undeclared.

  Vocabulary

  • czarny — black

  Grammar note

  'Na czarno' uses the accusative of 'czarne' after 'na' — a fixed adverbial phrase.

  Cultural context

  The 'black economy' ('czarna gospodarka') is a well-known concept in Poland — 'na czarno' is the standard term for undeclared work or transactions.

  Intermediate

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