Knavery
Part of speech: noun
Definition: The (mis)behaviour of a knave, boyish mischief. Deceit, an unprincipled action.
Dishonesty
Part of speech: noun
Definition: The characteristic or condition of being dishonest.An act which is fraudulent or otherwise dishonest.
Example sentence: Unfaithfulness in the keeping of an appointment is an act of clear dishonesty. You may as well borrow a person's money as his time.