Add to ORKGtypically been supposed to be related to one another. Based on their geographical proximity, this assumption of relatedness has been supported by impressionistic assessments of lexical and phonological similarity and the results of lexicostatistical measurements. Whilst recent historical work has shown definitively that the languages of Alor and Pantar are related to one another (Holton et al. 2012), the relation of the Papuan languages on Timor and Kisar has not yet been established with the proper methodological rigour. In this paper we present the results of a study applying the comparative method to the Timor and Kisar languages. We demonstrate the inter-relatedness of the Timor-Kisar languages through the identification of abundant cog...