suicide
sui"oneself" + -cide
https://gyazo.com/0f54526ce6b7e2948598179c5027bfff
source: Jisatsu-自殺 on Toyhouse
noun
1. the action of killing oneself intentionally:
自殺(行為) (!(1)具体例ではa ～/～s; その際しばしば修飾語を伴う. (2)時に〖名詞〗の前で形容詞的に用いる)
e.g. he committed suicide at the age of forty
e.g. drug-related suicides.
a person who commits suicide.
｟かたく｠ 自殺者
a course of action that is disastrously damaging to oneself or one's own interests:
｟比喩的に｠ 自殺［自滅］行為
e.g. it would be political suicide to restrict criteria for unemployment benefits.
as modifier relating to or denoting a violent act or attack carried out by a person who does not expect to survive it:
e.g. a suicide blast caused more deaths.
2. US a running drill consisting of a sprint to a set point (especially a line on a basketball court) and back to the start, immediately followed by additional sprints of lengthening distances:
e.g. we shot free throws and if we missed we ran suicides.
verb no object
intentionally kill oneself:
自殺する (!kill oneselfの方が一般的) .
e.g. he leaves the service and then suicides.
ORIGIN
mid 17th century: from modern Latin suicidium ‘act of suicide’, suicida ‘person who commits suicide’, from Latin sui ‘of oneself’ + caedere ‘kill’.