Definition & Meaning of "mistress of all evil"in English

What is the origin of the term "mistress of all evil" and how is it used?

"Mistress of all evil" is a descriptive phrase that emerged in English in the 20th century, popularized by Disney's 1959 animated film Sleeping Beauty, where it refers to the villain Maleficent. The term is used to portray a woman as extremely malicious, cruel, or villainous, emphasizing her power and moral corruption. It is used in informal, literary, or media contexts, including conversation, writing, and commentary, to describe particularly wicked female characters. The phrase is clearly derogatory and intended to condemn or frighten; it is never neutral.