Omission refers to something that has not been included or has not been done, either deliberately or accidentally. It can also refer to neglecting to do something or leaving out or passing over something. In law, an omission is a failure to act, which generally attracts different legal consequences from positive conduct). For example, in criminal law, an omission will constitute an actus reus and give rise to liability only when the law imposes a duty to act). An example of an omission in this context would be failing to take measures that lie within ones power to counteract a danger that one has oneself created). In everyday language, an omission can refer to something that has been left out or neglected. For instance, an important omission in a report could be a missing piece of information that should have been included.