Sneaky stratagem is a term used to describe a clever plan or trick that is used to deceive someone. It can involve a TRAP or RUSE, which are two words that can be used to describe the same concept. A TRAP is a device or situation designed to catch someone off guard and lead them into a disadvantageous position. A RUSE is a deceptive maneuver or trick used to gain an advantage over someone. Both of these words can be used to describe a sneaky stratagem.