I get it. Technically even in English TERF doesn't work because there are actual radical feminists that are trans-exclusive but they're such a fringe minority that barely anyone knows they exist, while the people who get the TERF label are basically synonymous with the "Gender Critical" folks who don't have a shred of feminism in their ideology at all.
Both vile and transphobic but one is more like a strand of revisionism within radical feminism rather than something entirely different.