dull /dʌl/ adj. 1. 枯燥无味，沉闷无聊：a dull book 一本枯燥无味的书；be dull at home 在家沉默无聊 2.阴的，阴郁的：a dull sound 模糊不清的声音The day was dull, with a cloudy sky. 天气阴，满天是云。［考句］ We don’t know why so many people in that region like to wear dresses of such dull colors. 我们搞不明白为什么那个地方那么多人喜欢这样阴暗颜色的衣服。3.钝的，迟钝的；蠢笨的，不活跃的：This knife is so dull that the blade won’t cut. 这把刀真钝，刀刃已无法割东西了。All work and no play makes Jock a dull boy. 只工作，不玩耍，聪明孩子要变傻。
［辨析］与clumsy, silly和stupid辨见clumsy
