The best dream book on the internet.
Find your dream: A-Z list:

Cruelty

    Cruelty appearing in a dream is an exhortation to rethink one's past life behavior and make an examination of conscience. A dream is also a warning not to take reckless actions on the spur of the moment.
    if you are cruel towards someone - you will start feeling guilty
    if someone is cruel towards you - you will be forced to complete a task the consequences of which may prove extremely unpleasant for you.

More dream interpretation: