/vɑləntɛri mænsˌlɔtər/ – Pharse
Definition: Hành vi giết người không cố ý nhưng vẫn có sự cẩu thả hoặc thiếu cẩn trọng.
A more thorough explanation: the offence of deliberately killing someone, but in a way that may reduce the seriousness of the crime or the punishment, such as having been provoked by the victim
Example: He accepted a plea agreement for voluntary manslaughter.