This is the 275th most frequent Serbian word.
ништа
Nothing.
The word 'ништа' is used to indicate 'nothing' as the subject of the sentence.
Ништа ме не може зауставити.
Nothing can stop me.
The word 'ништа' here is used as an object to emphasize absence of action.
Нисам ништа чуо у ноћи.
I heard nothing in the night.
In this context, 'ништа' denotes 'nothing special' to downplay importance.