Miscreant (noun)

1. A person who behaves badly or lawlessly; a villain or criminal.
2. A person who behaves in a dishonest or unethical way.

Origin:

From old french mescreant, from mes- (expressing change) + creant "believing", from latin credent- "believing".

Examples:

1. The police were looking for the miscreant who had robbed the store.
2. The company fired the employee for their misconduct, labeling him as a miscreant.
3. The miscreants were caught red-handed while trying to steal from the store.
4. The judge sentenced the miscreant to five years in prison.
5. The neighborhood watch was formed to keep an eye on the local miscreants.