Meaning of the word "pooh pooh" in English

What does "pooh pooh" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

pooh pooh

US /ˌpuːˈpuː/
UK /ˌpuːˈpuː/

Verb

express contempt or dismissal of (an idea or suggestion)

Example:
He tends to pooh-pooh any new ideas.
Don't pooh-pooh his suggestions; they might be valuable.