Old North French refers to a now-extinct language variant of the Old French language. It was spoken in the northern regions of France, specifically in Normandy and Picardy, during the Middle Ages. It is related to other dialects of Old French, but also possesses unique characteristics, such as the pronunciation of certain sounds and the use of specific vocabulary. Other synonyms for Old North French include Anglo-Norman, Norman French, and Old Norman. These terms all generally refer to the same language variant but may have slightly different connotations or be more commonly used in certain contexts. Despite its extinction, Old North French has had a lasting impact on the development of the French language.