n. The birth name of somebody who has changed their name. Most commonly attributed to trans people, but can be attributed to any person who has changed their name. (sometimes written as two words: dead name)

v. 1. To call somebody by their deadname.
v. 2. To out somebody's deadname to the public.
Don't call her by her deadname. She hasn't gone by that name in years.
by Canola Yogurt September 16, 2014
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A deadname is a trans term only, for cisgender people its birth name and/or old name.

Trans being people under the trans umbrella (trans men, trans women, nonbinary, agender, non cis demiboys, non cis demigirls.)
He's trans and his name is now Elliot and you shouldn't deadname him.

Their deadname is unimportant since they prefer another name.

Her deadname got leaked and she's devastated.
by decayingteeth May 21, 2021
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Deadname is a word used to describe someone’s old name after changing it (usually a trans person)
Don’t call her by her deadname
by Devil123457890 February 24, 2020
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Disrespectfully calling someone by their old name after they have changed their name. In particular, this is something done to transgender people.
"Well I've always known you as James, so I'm going to keep calling you James."
"Stop deadnaming me. My name is Jamie."
by happycookie August 3, 2015
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A deadname is the unused (birth)name of someone who changed their name, wether it has officially been changed or not. So technically, it's a dead name.

You could also call it a deadname because everyone who deadnames you shall become the dead /j
Person A: “Hi there deadname!”
Person B: “Oh hi! I probably didn't tell you yet but I changed my name to ______! I would appreciate if you used that name for me instead.”
by Juniper Woods kinnie June 21, 2021
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A Deadname is a Name a person under the Trans Umbrella used to have, but they changed it because it makes them uncomfortable.It is not okay to use a Person's Deadname, because they probably told you the name they prefer.
Person 1:hey *deadname*!
Person 2:hi could you please not use this name for me anymore its my Deadname I would like it more if you’d call me beanie.
Person 1:i’m sorry beanie
by I’m a hottie December 27, 2022
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Referring to someone by the name they were born with instead of the name they chose for themselves after their mental breakdown.
"Hey James!"
"I've told you before, my name is Jamie now. Stop deadnaming me."
"Shut the fuck up James. It doesn't matter that you've had your dick removed. That doesn't make you a woman, it just makes you a man without a dick. Now put the fucking kettle on."
by Pickle Flavoured Custard August 12, 2020
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