I was thinking arrgh I hope I can remember what the party name was, was it NSDAP? I'm not sure. Well people call them nazi but surely that wont be accepted because that is not the name of the party. Well I might aswell type it while I continue to think if I am sure what the name is.
The party didnt used the term themselves and was only used by opponents to ridicule them (because the term allready excisted and meant a backwards peasant, idiot.. (allready excisting before the party and supposedly coming from the name Ignazius If you dont believe me here's proof it is on wikipedia aswell.
In short, Nazi is a derogative nickname and has never been the name of the party. (if I forgot the checkbox, see comment above)