Her friends are worried that she might be 'suicidal'. [=that she might want to kill herself]
He knows that supporting a tax increase would be politically 'suicidal'.
psychiatrists working with 'suicidal' patients
(..) Would you like to discuss this with me? I'd rather drive a motorcycle full speed into a bridge abutment. Do you... Do you often entertain suicidal thoughts? No, I'm more homicidal in nature. Pretty sure you're not saying that in earnest, but as a way to keep me at arm's length. I'm here. What's up? (..)2008 TvShow: Bones Title: The Finger in the Nest Season: 4 Episode 3