1) Dangerous 2) Self-destructive 3) Seriously self-destructive 4) Tending or leading to suicide 5) Unsafe 6) Utterly downcast Found on https://www.crosswordclues.com/clue/suicidal
Su'i·ci`dal adjective Partaking of, or of the nature of, the crime or suicide. -- Su'i*ci`dal*ly , adverb Found on http://www.encyclo.co.uk/webster/S/234
Suicidal: 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. Found on http://www.medterms.com/script/main/art.asp?articlekey=32773
pertaining to, involving, or suggesting suicide. · tending or leading to suicide. · foolishly or rashly dangerous: He drives at a suicidal speed. Found on https://www.infoplease.com/dictionary/suicidal