WordNet: byname, cognomen, moniker, nickname, sobriquet, soubriquet

a familiar name for a person (often a shortened version of a person's given name); "Joe's mother would not use his nickname and always called him Joseph"; "Henry's nickname was Slim"

• hypernym appellation, appellative, denomination, designation

byname

• (suomi) liikanimi (synonyymi)

cognomen

• (suomi) lisänimi (synonyymi)

moniker

• (suomi) kutsumanimi (synonyymi)

nickname

• (englanti) nickname (derivationally related)
• (suomi) lempinimi (synonyymi)

sobriquet

• (suomi) lisänimi (synonyymi)

soubriquet

• (suomi) liikanimi (synonyymi)