Abhorrent or very undesirable.
Against the law; forbidden by law.
Guilty of breaking the law.
Of or relating to crime or penal law.
A person who is guilty of a crime, notably breaking the law.
Extremely reckless.
Likely to commit, or to attempt to commit, suicide.
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.
Pertaining to suicide.
Someone suicidal; someone likely to kill themselves.