idiot
/ˈɪdɪət; `ɪdɪət/ n
1 (infml 口) very foolish person; fool 蠢人; 笨蛋; 傻瓜
What an idiot I was to leave my suitcase on the train! 我真笨, 竟把手提箱落在火车上了!
2 person with very limited intelligence who cannot think or behave normally 白痴; 呆子
an idiot since birth 天生的白痴.