Pseudonym

A pseudonym (soo-do-nim) or alias is a fake name which a person uses instead of their real name. Pseudonyms can include stage names, screen names, ring names, pen names, nicknames, aliases, superhero identities and code names.

Many people use pseudonyms, including authors (pen names) and performers (stage names). Some use pseudonyms to hide their identity, gender, and/or race. Performers (like rappers) sometimes use pseudonyms to match their stage personalities better.

Pseudonym comes from the Greek word ψευδώνυμον (pseudṓnymon), which means "false name".