nišča (Slavomolisano) comes from Serbo-Croatian ništa, from Proto-Slavic ničьto, from Proto-Slavic čьto, from Proto-Balto-Slavic ki, from Proto-Indo-European kʷíd, from Proto-Indo-European kʷís, from Proto-Indo-European kʷi- — interrogative base.
nišča (Slavomolisano): nothing