Definition of pooh-pooh verb from the Oxford Advanced Learner's Dictionary

 

pooh-pooh

 verb
verb
BrE
 
; NAmE
 
Verb Forms present simple I / you / we / they pooh-pooh
BrE
 
; NAmE
 
he / she / it pooh-poohs
BrE
 
; NAmE
 
past simple pooh-poohed
BrE
 
; NAmE
 
past participle pooh-poohed
BrE
 
; NAmE
 
-ing form pooh-poohing
BrE
 
; NAmE
 
 
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pooh-pooh something (informal) to say that a suggestion, an idea, etc. is not true or not worth thinking about They are pooh-poohing suggestions of a split in the party. She had always pooh-poohed the idea of getting married. Word Origin late 18th cent.: reduplication of pooh.
See the Oxford Advanced American Dictionary entry: pooh-pooh