in a way that involves somebody thinking about killing themselves suicidally depressed 沮丧消沉得想自杀
in a very dangerous way that is likely to lead to the person's own death or cause them very serious problems or disaster 自杀性的；有致命危险的；毁灭性的；灾难性的 He likes to do suicidally crazy things with fast cars and motorbikes. 他喜欢用快车和摩托车疯狂地做些疯狂的事情。