or trash talk
[trash-taw-king or trash-tawk]
disparaging or boastful language used especially to demoralize or intimidate opponents: trash-talking in the locker room.
Origin of trash-talking
An Americanism dating back to 1985–90
verb (used without object)
to use disparaging or boastful language.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for trash-talking
Contemporary Examples of trash-talking
Hands on buzzers: One's a trash-talking thug trying to stay one step ahead of the law.Who (Allegedly) Said It?
December 9, 2008