reprobate
morally unprincipled person
Roots
Other words with the prob root
- approbation: approval or praise
- probable: likely to be true or happen
- probity: honesty and moral uprightness
- prove: to show that something is true
A reprobate is someone morally rejected after the test.
The novel treats the charming thief as a lovable reprobate.
Reprobate is easier beside probity. Probity passes the moral test; a reprobate fails it badly enough to be rejected.