This is the 12410th most frequent Polish word.
męczennika
"Martyr."
The term 'męczennika' is used to describe someone who suffered persecution for their beliefs.
Ta książka opowiada historię znanego męczennika.
This book tells the story of a famous martyr.
Here, 'męczennika' is used figuratively to refer to someone who unnecessarily adopts a pose of suffering.
Nie zachowuj się jak męczennika, bo nikt cię nie zmusza do tego.
Don't act like a martyr, because no one is forcing you to do this.
In this sentence, 'męczennika' is used in a formal historical or commemorative context.