deadname
1 of 2noun
dead·name ˈded-ˌnām 
variants or less commonly dead name
plural deadnames also dead names
: the name that a transgender person was given at birth and no longer uses upon transitioning
Many trans people will go to great lengths to prevent people from finding out their deadnames, destroying irreplaceable photos and documents in an effort to ensure that who they really are is the only identity most will remember.
Sam Riedel
Sam Riedeldeadname
2 of 2verb
deadnamed; deadnaming; deadnames
transitive verb
: to speak of or address (someone) by their deadname
A Texas high school that was planning to deadname a transgender student at his graduation ceremony today has reversed its decision, and will call him by his name after all. Jeff Taylor
Jeff TaylorWhen an officer misgenders and deadnames a victim, they are disregarding and denying that trans person's identity, advocates say. Annamarya Scaccia
Annamarya Scaccia
Word History
First Known Use
Noun
2010, in the meaning defined above
Verb
2013, in the meaning defined above