The term 'Devilish Sort' can be broken down into two crossword solutions: IMP (3 letters) and DEMON (5 letters). An IMP is a mischievous supernatural being, often described as a small, grotesque creature. Demons are powerful, evil spirits that are often associated with the Devil. Both of these creatures are considered to be devilish sorts, as they are both associated with the Devil and are known for their mischievous behavior.