Guilty (adjective)

1. Having committed a crime or offense.
2. Having done something wrong or improper.
3. Feeling responsible or ashamed for a mistake or wrongdoing.
4. Having a conviction for a crime.
5. Having a criminal record.

Origin:

Middle english guilty, from old french guilty, from latin guiltius, from guiltus, past participle of guiltare to blame.

Examples:

1. The jury found the defendant guilty of murder.
2. She felt guilty for lying to her friend.
3. He had a guilty conscience for his actions.
4. The man was guilty of theft and was sentenced to prison.
5. He had a guilty look on his face when he walked into the room.