Pritenic is a proposed reconstructed Celtic language, thought to be spoken by Picts and Priteni in Britain during late Iron Age. It was a P-Celtic language and the ancestor of Pictish, into which it evolved around 5th century AD. The term was originally proposed in 1955 by linguist Kenneth H. Jackson to describe a hypothetical Roman-era predecessor to the Pictish language, diverging from Brythonic in 75-100 AD.