Does clever or cunning mean the same as sly?

Clever and cunning share similarities but are not exactly the same as sly. "Clever" typically refers to being intelligent and able to solve problems, while "cunning" often implies a skillful use of deceit to achieve goals. "Sly" suggests a sneaky or devious quality, often associated with stealth or trickery. While all three terms can imply intelligence, they differ in connotation and emphasis on ethical behavior.