The term 'little devil' is a phrase used to describe someone who is mischievous or naughty. The crossword solutions for this term are IMP (3 letters), DEMON (5 letters), SCAMP (5 letters), RASCAL (6 letters), and DASTARD (7 letters). An IMP is a small, mischievous creature from folklore, while a DEMON is a supernatural being with evil powers. A SCAMP is a mischievous person, and a RASCAL is someone who behaves badly or dishonestly. Finally, a DASTARD is someone who is cowardly and mean-spirited. All of these words can be used to describe someone who is a 'little devil'.