(informal, especially British English)to behave in a way that suggests that you think that you are better than somebody or that something is not good enough for you对…不屑一顾；蔑视
People who live in that area tend to look down their noses at their poorer neighbours.住在那个地区的人往往瞧不起比他们穷的邻居。
They tend to look down their noses at people who drive small cars.他们往往看不起开小型汽车的人。