have no business doing something | have no business to do somethingidiomPart ofbusinesshave no business doing something | have no business to do somethinghave no business doing something | have no business to do something — idiomidiom1. To have no right or reason to do something.1.idiomDefinitionTo have no right or reason to do something.ExampleYou have no business reading my private emails.He had no business telling her what to do.