'naughtiness' originates from Middle English, specifically the word 'naughti,' where 'naught' meant 'nothing' and '-y' was a suffix indicating a state or condition.

'naughti' transformed into the modern English word 'naughty,' and eventually became 'naughtiness' to describe the state of being naughty.

Initially, it meant 'worthless or wicked,' but over time it evolved into its current meaning of 'mischievous or disobedient behavior.'