Advocate for racial hierarchies, spread hateful messages about various minorities, promote subjugation for women and violence as purification for men. The usually nazi shit, although the ones with extra brain cells try to be coy about it.

Fair enough. The reason I asked is because it seems people throw that word around very loosely now

Well to be fair, nazism and nazi-adjacent ideas have had a renaissance as of late.

Nazi (n) - a label used for anyone you don't like and would like permission to punch because you disagree with them, and is used unironically as a synonym for fascism, even though the word's use is to promote the silencing of opposing views, even with violence, just like fascism does.

Historical definition: a German political party that led Germany to destruction and performed mass genocide