Meaning of the word badmouth in English

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

badmouth

US /ˈbædˌmaʊθ/
UK /ˈbædˌmaʊθ/

Verb

to criticize someone or something in a malicious or unpleasant way

Example:
It's not fair to badmouth your colleagues behind their backs.
She always tries to badmouth her ex-boyfriend to everyone.