Muggle, in the Harry Potter books by refers to a person who lacks any sort of magical ability and was not born into the magical world. It differs from the term ', which refers to a person without magical abilities but with a magical ancestry and from the term, muggle-born, or mudblood, which refers to a person with magical abilites but without magical parents. The word occurred in popular culture and literature prior to Rowling's adoption of it.['] However, the Harry Potter series popularised the word, and it has come into common usage in other contexts. It was first used in the opening chapter of the first Harry Potter book, where Harry's uncle is shocked to find himself called a "muggle" by a tiny old man in a violet cloak.