selfname

noun3

1. •
   A name given to oneself; a self-denomination or self-appellation.

   • Mina is the selfname of the language referred to in the literature as Hina or Besleri. — 2005
2. •
   An autonym.
3. •
   A proper name; a name for one's own self, as opposed to one's family; one's real name.

   • Surnames are, with a few exceptions, monosyllabic. Selfnames can be either monosyllabic or bisyllabic. — 1986