Submitted by György Chityil ... on Fri, 01/19/2018 - 18:41 Hierarchy: VerbDescription: {{transitive}} To notify (someone) of something untoward. {{defdate|from 13th c.}}Ngram: warnNgram Text: warnSource: WiktionaryIssue: 0Wiktionary tag: from 13th c.Ngram Count: 1