Highly likely to certain to result in the deaths of the participants; dangerous or reckless to such a degree as to be tantamount to suicide for those taking part.
Likely to commit, or to attempt to commit, suicide.
Extremely reckless.
Pertaining to suicide.
Someone suicidal; someone likely to kill themselves.
Presenting a threat, posing a likely risk of harm.
Making threats, making statements about a willingness to cause harm.
An act of threatening; a threat.