Submitted by György Chityil ... on Fri, 01/19/2018 - 23:49 Hierarchy: NounDescription: {{idiomatic|by extension}} Someone or something persistently difficult or vexing; a frequent source of trouble or annoyance.Ngram: problem childNgram Text: problem childSource: WiktionaryIssue: 0Wiktionary tag: by extensionNgram Count: 2
