Causing harm or injury
Full of high-spirited fun
An idea brought a mischievous smile to her lips.
After an awkward silence, she glanced up at him with a mischievous smile.
Her mischievous blue eyes sought her father first and then her grandmother.
If she does not know the answer to a question, she guesses with mischievous assurance.
It was set on fire by mischievous boys, one Election night, if I do not mistake.