demented

Many of the patients there were demented.那里的许多病人都是精神失常的。

In the movie, he plays a demented man trying to survive on the streets of Los Angeles.在这部电影中，他扮演一位试图在洛杉矶街头生存下去的疯子。

Her demented ramblings are a symptom of her illness.疯言疯语是她疾病的症状之一。