The term 'devilish look' can be described by two crossword solutions: GRIN (4 letters) and SNEER (5 letters). A GRIN is a facial expression that typically involves both the corners of the mouth turning up and the eyes crinkling. It is often seen as a sign of amusement, joy, or happiness. A SNEER, on the other hand, is a facial expression of contempt or derision, usually involving a slight raising of one corner of the upper lip. Together, these two expressions create a devilish look, conveying a sense of mischief or wickedness.