sullen /ˈsʌlən/ adj. 1. 生气的，闷闷不乐的：I was served by a sullen-faced youth. 一个闷闷不乐的年轻人接待了我。The sullen child refused to answer my questions. 那愠怒的孩子拒绝回答我的问题。2. 阴郁的，阴沉的：He looked up at the sullen sky.他抬头看了一眼阴沉的天空。