English version

snake oil salesman/peddler

From Longman Dictionary of Contemporary Englishsnake oil salesman/peddlersnake oil salesman/peddler informalsomeone who deceives people by persuading them to accept false information, solutions that are not effective etc snake oil
Examples from the Corpus
snake oil salesman/peddlerFor all his odd and scary views, Buchanan has played the fear card like a snake oil salesman hawking eternal life.Perhaps, when the shouting from snake oil salesmen subsides, our leaders will find a way to forge a bipartisan solution.
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