feeling ashamed because you have done something that you know is wrong or have not done something that you should have done

having done something illegal; being responsible for something bad that has happened

He pleaded guilty to murder.

The jury found the defendant not guilty of the offence.

She may be guilty of murder.

He was not guilty of the crime he had been put in prison for.

We've all been guilty of selfishness at some time in our lives.

LEARNit Dictionary