What did naughty used to mean?

Historically, the term "naughty" originated from the Middle English Word "naught," which meant "nothing" or "worthless." In earlier usage, it described someone who was morally bad or wicked. Over time, its connotation shifted, and by the 18th century, it began to refer more playfully to misbehavior in children, leading to its modern usage, which often implies mischievousness rather than serious wrongdoing. Today, "naughty" is commonly associated with playful or cheeky behavior, especially in children.