Definition of "bad-mouthing" [bad-mouthing]

• Present participle of bad-mouth. (verb)

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• "Because he doesn't have enough proof to arrest the killer himself, Jane tricks his suspect into bad-mouthing Red John on television, knowing that it will anger Red John."
• "It's a shame that such tragedies result in unfair bad-mouthing of México."
• "A child who has felt the need to demonstrate loyalty by joining in bad-mouthing now has a chance to relate to you outside the shadow of the other parent's judgment."