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

plural of suicidal

The quality or state of being suicidal.

The quality of being suicidal.

suicidality

Obsolete form of suicidal.

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

Someone suicidal; someone likely to kill themselves.

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

(informal, derogatory) A shower having an electric heating element in the shower head.