THESAURUS
Nickname
affectionate name, agnomen, appellation, appellative, baptize, byname, byword, call, christen, cognomen, define, denominate, denomination, designate, diminutive, dub, entitle, epithet, first name, handle, hypocoristic, identify, label, moniker, name, nominate, pet name, sobriquet, specify, style, tag, term, title
ROGET THESAURUS
Nickname
Misnomer
N
misnomer, lucus a non lucendo, Mrs, Malaprop, what d'ye call 'em, Hoosier, nickname, sobriquet, by-name, assumed name, assumed title, alias, nom de course, nom de theatre, nom de guerre, nom de plume, pseudonym, pseudonymy, misnamed, pseudonymous, soi-disant, self called, self styled, self christened, so-called, nameless, anonymous, without a having no name, innominate, unnamed, unacknowledged, in no sense.
VB
misname, miscall, misterm, nickname, assume a name.