Expressing bad consequences: dreadful; dismal.
Warning of bad consequences: ill-boding; portentous.
Bad in quality, awful, terrible.
Requiring action to prevent bad consequences: urgent, pressing.
Pertaining to suicide.
Likely to commit, or to attempt to commit, suicide.
Extremely reckless.
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.
Someone suicidal; someone likely to kill themselves.