Submitted by György Chityil ... on Sat, 01/20/2018 - 01:20 Hierarchy: AdjectiveDescription: {{rare}} Improper, not according with good standards of behaviour; indecent, indecorous. {{defdate|from 19th c.}}Ngram: unproperNgram Text: unproperSource: WiktionaryIssue: 0Wiktionary tag: rarefrom 19th c.Ngram Count: 1