abstract:A language isolate, in the absolute sense, is a natural language with no demonstrable genealogical (or "genetic") relationship with other languages, one that has not been demonstrated to descend from an ancestor common with any other language. Language isolates are in effect language families consisting of a single language.
They think that the majorshortcomingsoflinguisticstudy are to isolatelanguagefromsociety, neglecting the historical and social background ofevents and processes.
Language, geography and history have combined to isolate Brazil from its Spanish-speaking neighbours on the far side of the Amazon rainforest and the Parana basin, let alone from the wider world.