If you feel bad about having stolen something and you wish you had not done it, this is an example of when you are remorseful.
(comparative more remorseful, superlative most remorseful)
- (of a person) Feeling or filled with remorse.
- He was so remorseful that he voluntarily paid full restitution.
- Expressing or caused by remorse.
- There was a remorseful look on her face.