manslaughter

:  the unintentional but unlawful killing of a person

:  the slaying of a human being; specifically :  the unlawful killing of a human being without express or implied malice

:  the unlawful killing of a human being without malice — compare homicide, murder involuntary manslaughter :  manslaughter resulting from the failure to perform a legal duty expressly required to safeguard human life, from the commission of an unlawful act not amounting to a felony, or from the commission of a lawful act involving a risk of injury or death that is done in an unlawful, reckless, or grossly negligent manner — see also reckless homicide at homicide Editor's note: The exact formulation of the elements of involuntary manslaughter vary from state to state especially with regard to the level of negligence required. In states that grade manslaughter by degrees, involuntary manslaughter is usually graded as a second- or third-degree offense. misdemeanor–manslaughter :  involuntary manslaughter occurring during the commission of a misdemeanor — compare felony murder at murder voluntary manslaughter :  manslaughter resulting from an intentional act done without malice or premeditation and while in the heat of passion or on sudden provocation Editor's note: In states that grade manslaughter by degrees, voluntary manslaughter is usually a first-degree offense.