The word "sneaky" describes someone or something that is secretive, sly, or stealthy. When a person behaves in a sneaky way, they often try to avoid being noticed or detected while doing something dishonest or underhanded. It conveys a sense of cunning and an intention to deceive or outsmart others.
The word "sneaky" originates from the verb "sneak," which dates back to the late 17th century. It is derived from the Middle Dutch word "snecken," meaning to sneak or to walk stealthily. The suffix "-y" has been added to form an adjective, indicating a characteristic of sneaking.