Rascal (noun)

A dishonest or unprincipled man.

Origin:

Middle english (originally denoting a person of low social status or a servant): from old french rascaille "rabble, mob", from rascal "rough, scabby", of germanic origin; related to rase.

Examples:

1. He was a notorious rascal.
2. The old rascal had a long history of conning people.
3. That rascal needs to be taught a lesson.
4. He was always a bit of a rascal.
5. He was a clever rascal who always managed to stay one step ahead of the law.