If you dreamed of accidentally killing someone: You should pay attention to your reactions to the events that you are sensitive to, If the current events or your routine flow start to bore you, it may be time to change some things. Killing someone by mistake in a dream refers to good developments in family life, being happy and clinging to life, always smiling. To kill someone by mistake in your dream refers to being a social person, getting along well with people, a happy life and success.