Pertaining to suicide. / (of a person) Likely to commit, or to attempt to commit, suicide.

Someone suicidal; someone likely to kill themselves.

plural of suicidality

In a suicidal fashion. / In terms of or by means of suicide.

plural of suicidal

The quality of being suicidal.

suicidality

(uncountable) The tendency of a person to commit suicide. / (countable) A fatality that is an instance of suicide.

simple past tense and past participle of suicide

Having killed oneself or self-destructed.