Submitted by György Chityil ... on Fri, 01/19/2018 - 23:35 Hierarchy: NounDescription: {{sports}} In sporting parlance, a rule that ends a one-sided contest prior to its natural conclusion.Ngram: mercy ruleNgram Text: mercy ruleSource: WiktionaryIssue: 0Wiktionary tag: sportsNgram Count: 2