somebody UK /ˈsʌmbˌɒdi/US /ˈsʌmbˌʌdi/pronoun 2noun 2forms 2 pronoun2 •a person, without saying who, often because that is unknownSomebody has to clean this mess up. •Synonym of someone; an important person.He could have been somebody! noun2 •Any person.In the nature of things a good many somebodies are always in hospital, and the law of averages had picked on me to be one of them a week or so before. — 1951 •A recognised or important person, a celebrity.I'm tired of being a nobody – I want to be a somebody. formssomebodies · somebodys