Rascally
Part of speech: adjective
Definition: Like a rascal.
Part of speech: adverb
Definition: In the manner of a rascal.
Dishonorable
Part of speech: adjective
Definition: Without honor, or causing dishonorLacking respect or ethical principles
Example sentence: A Code of Honor: Never approach a friend's girlfriend or wife with mischief as your goal. There are just too many women in the world to justify that sort of dishonorable behavior. Unless she's really attractive.