misname

From mis- +‎ name.

misname (plural misnames)

1. A wrong, unsuitable, misleading, or injurious name or designation; misnomer.
   • 1994, Marilyn Sanders Mobley, Folk Roots and Mythic Wings in Sarah Orne Jewett and Toni ...:

     Like the name Macon Dead, it is a misname imposed by someone with no concern about the consequences.

   • 2010, Sandra Hill, A Tale of Two Vikings:

     And it was a misname, because the woman who stood before him now in all her naked glory presented a picture beauteous beyond belief—to Vagn, leastways.

misname (third-person singular simple present misnames, present participle misnaming, simple past and past participle misnamed)

1. (transitive) To call by a wrong name.
2. (transitive) To give an unsuitable or injurious name to; name incorrectly.

• misnomer

• ammines, mismean