a person who has the qualities of a rat. ie someone who is lazy, does not clean up after himself/herself, is sneaky, frequently does not wash their hands or flush the toilet.

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.