suicidaladj/ˌsuː.ɪˈsaɪ.dəl/

• 1

  Pertaining to suicide.

  • He is an authority on the precursors of suicidal behavior.
• 2

  Of a person, likely to commit, or to attempt to commit, suicide.

  • After losing his job, his wife, and his leg in a single week, he became suicidal.
  • The campaign aimed to give commuters the confidence to trust their own instincts and intervene if they spot someone vulnerable who may be at risk of suicide, and to talk to them to interrupt their suicidal thoughts.
• 3

  Of a voluntarily-chosen course of action, 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.

  • Now, that, admittedly, did do an awful lot more damage (the 5th and 6th were almost completely wiped out), but the High Seas Fleet was, in turn, almost completely wiped out (in fact, basically was wiped out, to a man) by the oncoming rest of the British Grand Fleet, and it was decided by everybody that this kind of, like, suicidal, completely suicidal, charge was probably a bit out of character for Hipper, and so we didn't take that particular one into account.
• 4

  informalExtremely reckless.

  • His driving habits are utterly suicidal.
  • “We’ve got civilizational suicidal empathy going on,” Musk said, borrowing the term from Gad Saad, a Canadian scholar who is also a frequent Rogan host.

suicidalnoun/ˌsuː.ɪˈsaɪ.dəl/

• 1

  Someone suicidal; someone likely to kill themselves.