The term 'MISCHIEVOUS IMP' can be broken down into two crossword solutions: DEMON (5 letters) and SCAMP (5 letters). A DEMON is a supernatural being, often associated with evil or malevolence. In some cultures, demons are seen as the cause of physical and mental afflictions. A SCAMP is a mischievous person, usually a child, who behaves in a playful and naughty manner. Both terms refer to someone who is mischievous and causes trouble.