[ 'su:ɪsʌɪd ]
■ noun
1》 the action of killing oneself intentionally.
↘a person who does this.
↘[as modifier ] relating to or denoting a military or terrorist operation carried out by people who do not expect to survive it: a ~ bomber.
2》 a course of action which is disastrously damaging to one's own interests.
■ verb intentionally kill oneself.
Derivatives
suicidal adjective
suicidally adverb
Origin
C17: from mod. L. suicida 'act of ~', suicidium 'person who commits ~', from L. sui 'of oneself' + caedere 'kill'.