自殺(じさつ)

じさつ
noun
suicide
healthsociety
1. suicide, self-destruction
The act of intentionally taking one's own life.
There are counseling services for suicide prevention.
Measures to reduce the suicide rate are necessary.
He attempted suicide due to financial problems.
Counseling systems at schools were strengthened to prevent youth suicide.
In Japan, support for people who have attempted suicide is a pressing issue.

自殺(じさつ)する is used as a する-verb meaning "to commit suicide."

Common collocations

Note: This is a sensitive topic. In Japan, there are help resources like "いのちの電話(でんわ)" (Inochi no Denwa - Lifeline).