One’s internal sense of being male, female, neither of these, both, or other gender(s). This is separate from the sex one was assigned at birth, and can be different from one’s gender expression.
Person 1: “There are only 2 genders - penis & vagina!”
Person 2: “Actually, there are a lot more than two, and gender identity isn’t determined by physical attributes like genitals. *Tries to explain how they’re incorrect*”
Person 1: “There are still only 2 genders!”
Person 2: *Facepalms*
by HERO_DREAMER February 13, 2018
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An excuse for bright haired heterosexuals to make themselves more quirky, and to appropriate the struggles of lesbians and gays who simply don't conform to it by being themselves and want nothing to do with it.
Person one: what is your Gender identity?"
Spicy straight: I identify as a demi sexual demigod non binary interdimentional non-woman. I am also part cat. My pronouns are meow/meowself. Don't mis gender me, you bigot.
by Dragonsblight January 30, 2023
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A persons unchanging identity based on the gender of their brain.

Usually this will match a persons sex but in some cases when the brain doesn't get enough hormones at birth the brain can develop to be opposite to a person's sex or be genderless and the person will be born transgender.
A lot of people mix up gender expression, and gender roles with gender identity.
by RenZIsHereKiddo October 13, 2020
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The individual identification of a person's gender, as defined by that person. Usually used in reference to transgender, genderqueer, or transsexual people -- people whose gender identities differ from their physical sex.
Jack is cisgender, and his gender identity is male. He's got a penis and XY chromosomes.

Jay has been really confused about her gender identity lately; she thinks maybe she's an androgyne, but she's not certain.

Jane is a transsexual woman, so her gender identity is pretty solidly feminine.
by Quil | absurdism.org April 22, 2007
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Gender identity disorder is defined as a disorder in which an individual believes they are a gender not assigned to them at birth based on their genitalia. Believing something to be true that is proven not to be is considered a delusion. Individuals with gender identity disorder should receive therapy and care to treat their disorder as one would treat any other disorder: with compassion, patience, and respect. Not surgery.
He began wearing dresses and heels everyday, insisting we call him by female pronouns. Poor man had gender identity disorder.

She continually insisted that we call her by the pronouns he and him. It was a telltale sign of gender identity disorder.

The small child was diagnosed with gender identity disorder. Sadly, their parents fed their delusions and the condition grew worse.
by ORV_LYD April 23, 2018
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A condition defined by a male who is wearing cologne that is either citrus or floral in nature, or by a woman who is wearing a perfume that is woodsy or earthy in nature.
"Did you guys smell whatever it is that Scott is wearing today?"
"I know, I think that he has gender identity disodor."
by The one and only Joshua James January 12, 2014
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