This is the 16996th most frequent Polish word.
wystąpił
"Occurred" or "appeared."
The word 'wystąpił' here means 'performed,' indicating someone took action on a stage or platform.
Wystąpił na scenie podczas koncertu.
He performed on stage during the concert.
The word 'wystąpił' indicates something (an error) happened or occurred.
Wystąpił błąd w programie.
An error occurred in the program.
In this context, 'wystąpił' refers to the act of presenting or appearing with something in a public setting.