pooh-pooh
verb [ T ] informal uk/ˌpuːˈpuː/ us/ˌpuːˈpuː/
对…不屑一顾，蔑视;贬低
to express an opinion that an idea or suggestion is silly or not worth considering
Some seemingly reasonable people go on holiday and pooh-pooh the idea of wearing sunblock. 一些看来懂道理的人们在度假时却对涂防晒霜不屑一顾。