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  What it means

  Borrowed from Italian via French, “na serio” means “seriously” or “for real” — as opposed to joking. It is used to ask or confirm whether something is genuine: “Mówisz na serio?” — “Are you serious?” It can also describe doing something earnestly or with full commitment: “Tym razem zabieram się za naukę na serio” — “This time I’m getting down to studying seriously.”

  Vocabulary

  • serio — seriously (from Italian 'serio')
  • na serio — seriously, for real, in earnest
  • mówić — to say, to speak

  Grammar note

  The word 'serio' is an invariable loanword — it does not change for case, gender, or number. The prepositional phrase 'na serio' functions as an adverb modifying verbs. It is used in both affirmative sentences and questions without any inflection.

  Cultural context

  This is a very casual, conversational expression widely used by younger Poles and in informal contexts. It is equivalent to English 'seriously,' 'for real,' or 'in earnest.' In more formal writing, Polish speakers might prefer 'poważnie' (seriously) instead.

  Beginner

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