pooh-pooh

1. V-T If someone pooh-poohs an idea or suggestion, they say or imply that it is foolish, impractical, or unnecessary. 轻视; 蔑视; 贬低

In the past he has pooh-poohed suggestions that he might succeed Isaacs. 过去，他对自己或许接替艾萨克斯的说法嗤之以鼻。