Definition of "one-star" []

• Low-quality (adjective)

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• "The app received 85 five-star reviews--the highest rating--from App Store users, but it also received nearly twice as many one-star reviews."
• "Going against all common sense, I did peek at the Amazon reviews, and was amused by a one-star effort."
• "Kindle users are upset over the delayed e-book release of Game Change and they have collectively given the book one-star ratings in protest."