Submitted by György Chityil ... on Fri, 01/19/2018 - 22:09 Hierarchy: NounDescription: {{agent noun of|undo|nodot=1}}; one who undoes.Ngram: undoerNgram Text: undoerSource: WiktionaryIssue: 0Wiktionary tag: agent noun ofundonodot=1Ngram Count: 1