Ok, a bit more googling makes me think it's a disingenuous insult used by anti-femininsts rather than a term of self identification for bigots. Or do I have the wrong end of the stick?
@MattRose it was first used as self identification, now they go around saying terf is a slur because it's perfectly describing their ideology; and it's used mostly by other feminists who cannot support them for obvious reasons
@CobaltVelvet @MattRose This is what I've understood it to mean.
@MattRose You have it sort of right, it's an insulting term used by anti-women trans people. Repeat, anti-women, not just anti-feminist.
@MattRose trans exclusionary radical feminists
basically a small branch of radical feminism that focuses on eradicating trans people, seen as ultimate enemies and/or traitors
basically homicidal and delusional fucks using a very wrong feminism as an excuse to kill people