Middle English (abbreviated to ME) is the forms of the English language that were spoken in England after the Norman Conquest of 1066, until the late 15th century, roughly coinciding with the High and Late Middle Ages. The Middle English dialects displaced the Old English dialects under the influence of Anglo-Norman French and Old Norse, and were in turn replaced in England by Early Modern English.
Middle English had significant regional variety and churn in its vocabulary, grammar, pronunciation, and orthography. The main dialects were Northern, East Midland, West Midland, and Southern in England, as well as Early Scots and the Irish Fingallian and Yola.