Slick Trick is a term used to describe a clever or cunning plan or action. The two crossword solutions for this term are RUSE (4 letters) and FASTONE (7 letters). RUSE is defined as a crafty trick or stratagem used to deceive or outwit someone, while Fastone is an expression meaning a clever or witty remark. Together, these two words can be used to describe a clever plan or action that is used to deceive or outwit someone.