Submitted by György Chityil ... on Fri, 01/19/2018 - 21:56 Hierarchy: AdjectiveDescription: Skeptical, disbelieving, or unable to believe. {{defdate|from 16th c.}}Ngram: incredulousNgram Text: incredulousSource: WiktionaryIssue: 0Wiktionary tag: from 16th c.Ngram Count: 1