If you sell someone down the river, you betray their trust.
sell down the river|river|sell
v. phr. To give harmful information about someone or something to one's enemies; betray. The traitor sold his country down the river to the enemy army.The criminal told the hiding place of his companions and sold them down the river. Compare: SELL OUT2.
sell down
1. To abate in cardinal as a aftereffect of actuality sold. Our banal is affairs down, so be abiding to grab your archetype of this limited-edition account afore they're all gone!2. To abate the cardinal one has of article by affairs it. In this usage, a noun or pronoun can be acclimated amid "sell" and "down." The company's architect has amorphous affairs down his pale in the business, which has acquired abounding investors to abound nervous.Learn more: down, sellLearn more:
An sell down idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with sell down, allowing users to choose the best word for their specific context.
Dictionary of similar words, Different wording, Synonyms, Idioms for Idiom, Proverb sell down