to talk about or look at someone or something in an unkind way that shows you do not respect or approve of him, her, or it

You may sneer, but a lot of people like this kind of music. 你可以嗤之以鼻，但很多人喜欢这种音乐。

She'll probably sneer at my new shoes because they're not expensive. 她也许会笑话我的新鞋子，因为买得很便宜。

[ + speech ] "Is that the best you can do?" he sneered. “那就是你最大的能耐了吗？”他嘲笑着说。

an unkind expression on your face that shows you do not respect or approve of someone or something

"How much did you say you earned last year?" she said with a sneer. “你说去年你挣了多少钱？”她语带讥讽地说道。