lunaticKK [ˋlunəˏtɪk] /ˈlunəˌtɪk/名詞1瘋子、神經病貶義He drove like a lunatic all the way down the mountain road.他一路開下山，開車像個瘋子。2狂人、瘋狂的人Only a lunatic would swim across that river at night.只有狂人才會在晚上游泳橫渡那條河。3精神病患者舊式The building was once an asylum for lunatics.這棟建築曾是收容精神病患者的療養院。形容詞1瘋狂的、荒唐的The company approved his lunatic plan without asking any questions.公司完全沒有質疑，就通過了他那個荒唐的計畫。2精神失常的、瘋癲的舊式Old records described him as lunatic and unfit to testify.舊紀錄把他描述為精神失常、不適合作證。