Nevera can also be a variant for nevjera in the ekavian* dialect, eg. serbian language would use it (https://en.wiktionary.org/wiki/nevera#Serbo-Croatian https:

Nevera can also be a variant for nevjera in the ekavian* dialect, eg. serbian language would use it (https://en.wiktionary.org/wiki/nevera#Serbo-Croatian https://en.wiktionary.org/wiki/nevera#Serbo-Croatian). Although the stress is different (/něʋera/ vs /něʋeːra/). (*) dialects on wikipedia: https://en.wikipedia.org/wiki/Dialects_of_Serbo-Croatian#Division_by_jat_reflex https://en.wikipedia.org/wiki/Dialects_of_Serbo-Croatian#Div... One of the provided examples has variations of the word "vjera" meaning faith in each dialect, ne-vjera is basically non-faith. > faith věra vera vira vjera