Muggle stands for ordinary people without magical ability, this word comes from the Harry Potter series, because Ms. Rowling created the word muggle, and later imported into the country after being translated into muggle. It is mainly used to indicate that there is no relationship with the wizarding world, and has always believed that the wizarding world does not exist ordinary people.

The meaning of retarded. Muggle" is the phonetic translation of the word muggle, created by British author J.K. Rowling in her work "Harry Potter", indicating non-magical humans.