Trans-Exclusionary Radical Feminist. That group of feminists that claims that trans women aren't really women, as biological determinism is only a fallacy when it used against them, not when they use it against others.
Isn't it mindboggling that the Royal College of Psychiatrists would invite a TERF like Julie Bindel to come talk at a study day on transgenderism and transsexuality? That's like inviting Fred Phelps to come deliver the keynote at a gay pride.
by zmas March 15, 2011
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Trans-Exlusionary Radical Feminist. Originally just named radical feminism. The basis of radical feminism is that gender is a social construct forced upon people at birth and are roles specifically designed to keep women subordinate to men (masculinity vs.feminity). Men, Trans activist, and liberal feminist use the term "TERF" because the principle of radical feminism cannot coexist with gender/trans ideology
Radical Feminists are inappropriately named TERFS to silence any female centered discussion
by Ghostglitter December 20, 2016
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A term autogynephilic males and fujoshis will scream at you the second a woman dares to question their misogynistic, homophobic nonsense. Could also mean a lesbian woman who refuses to date pornsick males.
Narcissistic Male: Fuck you terf bitch, I hope you bleed to death you cunt #transwomenarewomen #transpride

Adult Human Female: No matter how much you mutilate yourself, you cannot change the fact that you are biologically male, retain male crime-rates and socialization, and for fuck's sake, that hole in your groin isn't a vagina, it's an open wound. Stay out of our bathrooms.
by Spotifynopeyourproblemstome September 18, 2022
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Trans exclusionary radical "feminist" who accidentally spawned in from the 1930s

Ultra ironic because they'll be like "don't reduce us to our genitalia!" and then reduce trans people to their genitalia
(according to them all trans women are rapists and all trans men are lesbians in denial)
Joanne: TERF is a slur used to silence us!!
Julia: Damn I wished it worked
by tired.asf February 22, 2023
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From the acronym, Trans Exclusionary Radical Feminist, originally applied to anyone sympathetic to the materialist strand of feminism that seeks to counter women's inequality in the material division of reproductive labour and the objectification of women through sex-role stereotypes (aka "gender"). In defining women by the sub-set of males that women's boundaries exclude, the term centres male interests over women's and has been noted as a dehumanizing slur in UK case law.

In common usage, broadened to apply to any critic of gender-based policies, whether feminist or not.
A: doesn't J K Rowling have a right to free speech?
B: naw, terfs don't have rights.
by Sean O'Neagan April 27, 2022
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Trans-Exclusionary Radical Feminist. Feminists who think that trans women aren’t women, and are a threat to women’s rights.

See Also: J.K. Rowling
Me: Hey Jenna, what’s a TERF?

Jenna: Read J.K. Rowling’s latest tweets.

Me: ***reads tweets*** Ah... that makes sense! She says “No Trans Rights!”
by FegelFatso June 18, 2020
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Terf stands for trans exclusionary radical feminist/feminism, that describes self proclaimed feminists that go against trans and non bianry people.
Terf: I am an adult human female, these trans women want to take my rights!
Other person: trans women dont want to take your rights, they want to exist, terf.
by jazz161 November 13, 2021
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