Also known as: voluntary manslaughter
Written by attorneys · grounded in primary & secondary sources — see below
An intentional killing that would otherwise constitute murder but occurred in the heat of passion following adequate provocation and before a reasonable cooling-off period had elapsed. At common law certain situations such as a serious battery on the defendant or a close relative qualify as adequate provocation while mere words and long-past wrongs do not. In some jurisdictions an honest but unreasonable belief in the need for deadly force in self-defense supplies an independent ground for mitigation.
Select any source to read its text and confirm it supports the definition.
Iain Irons learned during a staff meeting that his colleague had criticized his work in an email sent weeks earlier. After the meeting Iain confronted the colleague in the hallway and received only sarcastic replies. Enraged by the remarks Iain pulled a knife and stabbed the colleague to death. Because the provocation consisted solely of words the killing remains murder rather than intentional manslaughter.
Isaac Irving watched his brother argue with a coworker at a construction site. The coworker suddenly punched the brother in the face. Isaac grabbed a nearby pipe and struck the coworker fatally. The serious battery on a close relative occurred moments before the killing and the facts support reduction to intentional manslaughter.
Ivy Ibarra saw her neighbor reach quickly into a jacket pocket during a heated sidewalk dispute. Believing the neighbor was drawing a weapon Ivy stabbed the neighbor with a screwdriver she carried. The belief was honest though unreasonable. In jurisdictions recognizing imperfect self-defense the killing is reduced to intentional manslaughter.
Israel Irving discovered his spouse with another person at a party. He left the scene drove home and returned two hours later with a weapon. By then a reasonable person would have cooled and the killing is therefore murder rather than intentional manslaughter.
Ilana Isaacs walked into her garage and found her spouse embracing a neighbor. She immediately seized a nearby wrench and struck the neighbor fatally. The killing occurred before any reasonable cooling period and therefore qualifies as intentional manslaughter.
Ira Irving learned months earlier that a business partner had cheated him. Months later during an unrelated argument Ira stabbed the partner. The long-past wrong supplies no adequate provocation and the killing remains murder.
Intentional manslaughter requires an intentional killing that would otherwise be murder but is mitigated because it occurred in the heat of passion upon adequate provocation before a reasonable cooling-off period elapsed. Murder requires malice aforethought that is not negated by such provocation.
Supporting sources
Yes. At common law catching one's spouse in the act of adultery is a classic category of adequate provocation that can reduce an intentional killing to intentional manslaughter provided the other elements of heat of passion are met.
…The court further held, in part, that the trial court did not err in refusing to instruct the jury with respect to voluntary manslaughter since there was no evidence to support that verdict. [^maj-3]: Subsequent to the trial in this case limited portions of the Georgia statute were amended. None of these amendments changed…
…and submission being the duty of a slave, much greater provocation is necessary to reduce a homicide of a white person by him to voluntary manslaughter, than is prescribed for white persons." Art. II, § 4711. In more recent times, some 40 years ago, Gunnar Myrdal's epochal study of American race relations produced findings mirroring…
…one day in prison. The Alabama Supreme Court reversed the conviction because of the trial judge's failure to charge the jury on voluntary manslaughter. Simpson was retried, reconvicted, and sentenced by the jury to 20 years in prison. The Alabama courts denied relief, and Simpson sought habeas corpus in the Federal District Court. That…
…451(a) (West 1999) (prison term of 5, 7, or 9 years for arson that causes great bodily injury); it imposes upon those guilty of voluntary manslaughter
…alternative. Obviously, other examples of such decisional paradigms exist. See, e.g., 18 Pa.C.S. § 2503 (describing offense of voluntary manslaughter
Supporting sources
No. At common law mere words alone are legally inadequate provocation and cannot reduce what would otherwise be murder to intentional manslaughter.
Supporting sources
In some jurisdictions yes. An honest though unreasonable belief that deadly force was necessary in self-defense can mitigate an intentional killing to intentional manslaughter under the doctrine of imperfect self-defense.
Supporting sources
No. A serious battery inflicted on a close relative qualifies as adequate provocation at common law and can support reduction to intentional manslaughter.
Supporting sources