selfname

• self-name, self name

From self (“own, proper”) +‎ name. The autonym sense is a calque of Ancient Greek αὐτο- (auto-, “self-”) + ὄνομᾰ (ónomă, “name”), which are the ultimate roots of English autonym itself.

selfname (plural selfnames)

1. A proper name; a name for one's own self, as opposed to one's family; one's real name.
   • 2000, Diane Duane, My Enemy, My Ally:

     "Oh, Elements," she finally managed to say, sitting back against the seat cushion of the pilot's chair, "is that truly your selfname?" "James, actually."

   • 2000, Joan Slonczewski, A Door Into Ocean:

     But first of all came Lystra with her selfname.

2. (linguistics, anthropology) A name given to oneself; a self-denomination or -appellation.
   • 2005, Zygmunt Frajzyngier, Eric Johnston, A Grammar of Mina:

     Mina is the selfname of the language referred to in the literature as Hina or Besleri.

3. (puristic) An autonym.
   • 2009, Nicolas Tranter, The Languages of Japan and Korea:

     In the past, the Ainu (their selfname meaning 'person'), traditionally huntergatherers, occupied not only Hokkaido but also a considerable part of the island of Honshu until the middle the eighteenth century, [...]

• Fleemans, enflames