nobody

Nobody is an English indefinite pronoun and noun that denotes the absence of any person. As a pronoun, it refers to no person at all and is used in negative statements: Nobody arrived; There is nobody at the door. It can function as a subject or object and is often interchangeable with no one or none, though usage can vary by formality. Common phrases include Nobody knows, Nobody’s perfect, and There is nobody here.

Etymology and capitalization: The word combines no or not any with body, and it appears in Middle English. It is usually lowercase unless starting a sentence. In classical literature, Nobody may appear as a proper name; notably, Odysseus uses the alias “Nobody” (Outis) in Homer's Odyssey to mislead the Cyclops.

Other uses and notes: In computing, “nobody” is a conventional unprivileged user name on Unix-like systems used to run services with minimal privileges. In philosophy and fiction, the term is used to discuss concepts of existence and personhood or to denote a nonentity. The term is widely recognized in everyday language as a generic reference to a person who is not present or who does not exist.