A state of mind where taking one's own life seems like the only solution to a problem.

Pertaining to suicide. the taking of ones own life. As in a suicidal gesture, suicidal thought, or suicidal act. An "online lifeline for suicidal undergrads" may help prevent college students from committing suicide.

dangerous to yourself or your interests; "suicidal impulses"; "a suicidal corporate takeover strategy"; "a kamikaze pilot"

Partaking of, or of the nature of, the crime or suicide.