powiedzia

In a sentence

• Maria powiedziała, że przyjdzie na spotkanie.

  Maria said that she would come to the meeting.

  Here, 'powiedziała' is used as the past tense third-person singular form of 'powiedzieć,' meaning 'to say.' The sentence expresses an action completed in the past where Maria conveyed information.

• Czy powiedziałeś coś interesującego podczas prezentacji?

  Did you say something interesting during the presentation?

  'Powiedziałeś' is the masculine past tense second-person singular form of 'powiedzieć,' used to inquire if the addressed person conveyed something during an event.

• Będę mówił powoli, abyś mnie dobrze zrozumiał.

  I will speak slowly so that you understand me well.

  While 'powiedzieć' generally means 'to say,' here 'mówił' is used as the continuous action form of 'mówić,' related to saying but emphasizing speaking or narrating over a period of time.