Simple Definition of bad-mouth

from our Learner's Dictionary

bad-mouth

verb

ˈbædˌmaʊθ How to pronounce bad-mouth (audio)
bad-mouths; bad-mouthed; bad-mouthing
informal : to say bad things about (someone or something) : to criticize (someone or something)
She refuses to bad-mouth her colleagues.

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“Bad-mouth.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/bad-mouth. Accessed 15 Apr. 2026.

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