The term 'most cunning' can be described by the following crossword solutions: 'sliest' (6 letters), 'slyest' (6 letters), 'wiliest' (7 letters), 'cutest' (6 letters), 'cagiest' (7 letters), and 'foxiest' (7 letters). All of these words refer to someone who is crafty, SLY, or clever. The term 'SLY' is often used to describe someone who is crafty and able to outwit others. The term 'WILY' is similar to SLY, but it implies a more subtle approach. The terms 'cutest' and 'foxiest' refer to someone who is attractive and charming, but also has a certain level of cunning. Finally, the term 'cagiest' refers to someone who is shrewd and calculating.