In the fictional world of J. K. Rowling's book series Harry Potter, a muggle is a person who lacks any sort of
magical ability and was not born into the magical world. Muggles also do not
have any magical blood. It differs from the term Squib, which
refers to a person with one or more magical parents yet without any magical
ability, and from the term Muggle-born (or the more offensive mudblood), which refers to a person with magical abilities
but without magical parents.
In the Harry
Potter books, non-magical
people are often portrayed as foolish, sometimes befuddled characters who are
completely ignorant of the Wizarding world that exists in their midst. If, by
unfortunate means, non-magical people do happen to observe the working of
magic, the Ministry of Magic sends
Obliviators to cast Memory Charms upon them—causing them to forget the event.
Some Muggles, however, know of the
wizarding world. These include Muggle parents of magical children, such as Hermione Granger's parents, the Muggle Prime Minister (and his predecessors), the Dursley family (Harry
Potter's non-magical and only living relatives), and the non-magical spouses of
some witches and wizards.
Rowling has said she created the word
"Muggle" from "mug", an English term for someone who is
easily fooled. She added the "-gle" to make it sound less demeaning
and more "cuddly".
A 'muggle' is, according to Abbott
Walter Bower, the author of the Scotichronicon,
"an Englishman's tail". In Alistair Moffat's book, A History of the Borders from Early
Times it is stated that there
was a widely held 13th century belief amongst Scots that Englishmen had tails.