Submitted by György Chityil ... on Fri, 01/19/2018 - 22:09 Hierarchy: AdjectiveDescription: {{uncommon}} Capable of being doubted; doubtful; dubious; dubitable. ''See usage notes below.''Ngram: doubtableAntonym: undoubtableNgram Text: doubtableSource: WiktionaryIssue: 0Wiktionary tag: uncommonNgram Count: 1