Submitted by György Chityil ... on Sat, 01/20/2018 - 00:57 Hierarchy: NounDescription: {{chiefly|US|idiomatic}} A person or thing which is the least robust or least dependable member of a group.Ngram: weak sisterNgram Text: weak sisterSource: WiktionaryIssue: 0Wiktionary tag: chieflyNgram Count: 2
