Jens Otto Harry Jespersen (Danish: [ˈʌtˢo ˈjespɐsn̩]; 16 July 1860 – 30 April 1943) was a Danish linguist who worked in foreign-language pedagogy, historical phonetics, and other areas, but is best known for his description of the grammar of the English language. Steven Mithen describes him as "one of the greatest language scholars of the nineteenth and twentieth centuries."
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