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Meaning of bad-mouth

bad-mouth

Pronunciation: (bad'mouth" or, sometimes, -mou"), [key]
— -mouthed, -mouth•ing.
  1. to speak critically and often disloyally of; disparage: Why do you bad-mouth your family so much?
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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