Transfer of Swahili ‘until’ in contact with East African languages

Swahili has transformed the noun mpaka ‘boundary, border’ into a function word ‘until’, which has successfully spread to many other East African languages with locative and temporal readings. The grammaticalisation originated in a N-N construction without an associative ‘of’ interpreted as limiting the action adverbially. The main function is in the time interpretation of ‘until’. I provide an overview of this transfer in East Africa by looking at a large number of languages and argue that parallel independent grammaticalisation is not what is at stake but rather transfer of the function word and the preposition-like function.Descriptive and Comparative Linguistic