One who commits suicide; at common law, one who, being of the years of discretion and of sound mind, destroys himself, The act of taking one's own life voluntary and intentionally; self-murder; specifically (Law), the felonious killing of one's self; the deliberate and intentional destruction of one's own life by a person of years of discretion and of sound mind, a person who kills himself intentionally, intransitive verb_ To kill oneself; commit suicide, To kill oneself intentionally, adjective_ Relating to, involving, or resulting in one's voluntary death