su·i·cide
(s
ĭ-s
īd
′)
n.1. The act or an instance of intentionally killing oneself.
2. The destruction or ruin of one's own interests: It is professional suicide to involve oneself in illegal practices.
3. One who dies by suicide.
intr.v. su·i·cid·ed,
su·i·cid·ing,
su·i·cidesTo kill oneself; die by suicide.
adj.Relating to, involving, or resulting in one's voluntary death.
[Latin suī, of oneself; see s(w)e- in the Appendix of Indo-European roots + -CIDE.]