What quality is characterized by skill in deception?

The quality characterized by skill in deception is cunning. This term refers to the ability to achieve one's goals through cleverness and deceit. A cunning individual often uses their intelligence and resourcefulness to manipulate situations or people to their advantage, which inherently involves some level of deception.

Sincerity and honesty represent qualities of truthfulness and integrity, which stand in direct opposition to deception. Naivety, on the other hand, refers to a lack of experience or sophistication, often resulting in a person being easily deceived rather than skilled in deception themselves. In contrast, cunning specifically denotes a proactive ability to deceive or manipulate, making it the most appropriate answer in this context.