The Ancient Greek dialect of Pamphylia shows extensive influence from the nearby Anatolian languages. Evidence from the linguistics of Greek and Anatolian, sociolinguistics, and the historical and archaeological record suggest that this influence is due to Anatolian speakers learning Greek as a second language as adults in such large numbers that aspects of their L2 Greek became fixed as a part of the main Pamphylian dialect. For this linguistic development to occur and persist, Pamphylia must initially have been settled by a small number of Greeks, and remained isolated from the broader Greek-speaking community while prevailing cultural attitudes favored a combined Greek-Anatolian culture.