Heterosexism - The false assumption that everyone is or should be heterosexual because it is assumed to be the only acceptable and viable life option; this assumption often leads to discrimination based on sexual orientation; a form of homophobia.

by dijjn June 4, 2003
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prejudiced belief in the social/sexual/moral superiority of heterosexuals or heterosexual attraction over non-heterosexals or same-sex attraction.

one's actions or attitude as a reflection of such a prejudice.
justin took the brunt of his peers' heterosexism throughout high school.
by dagger_grrl February 21, 2004
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A discriminative attitude grounded on the sexual orientation criteria, and more specifically -our society being still what it is- a discriminative attitude towards gays and lesbians.
The heterosexism of certain definitions of the Urban Dictionnary really scares the shit out of me.
by Ysengrim January 2, 2004
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Heterosexism is a term currently being passed around by liberal, intelligentsia wannabes who subscribe to the current "gay agenda", used in an attempt to rhetorically link the plight of those poor "oppressed" homos with the very real and pressing past and current struggles against racism and sexism. People who view the active practice of homosexuality as being morally, religiously, or socially unacceptable are likely to be labeled as heterosexist. This differs from homophobia in that, rather than fearing homosexuality, a 'heterosexist' will simply view heterosexuality as being the social, cultural, moral, and/or religious norm.
"Only heterosexists would protest the hanging of rainbow-colored 'acceptance' flags over dorm entrances."

"That militant femnazi dyke in sociology class accused me of heterosexism today."
by Fachxphyre April 28, 2006
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It’s just someone who can’t stand female-male relationships. Don’t ask me, ask someone who’s Heterosexist.
Boy #1:Hey look, it’s Hannah!
Girl #2:Ever heard of Heterosexism? She doesn’t like straights like you and me.
by Fellowbigirl May 29, 2021
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"That girl was mad heterosexable with her pretty face and long legs."
by Sameer Bajaj January 23, 2006
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Right-wing sexism: supremacy of heterosexuality, inferiority of homosexuality, demonization of homosexuality and generalized hatred against homosexuality.
I hate heterosexism.
by Roscanbi March 22, 2023
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