Characteristics
As Tamil is a diglossic language the differences between the standard written languages across the globe is minimal but the spoken varieties differ considerably. The spoken varieties in Sri Lanka although different from those of Tamil Nadu share some common features between the southern dialects of Tamil Nadu and the northern Sri Lankan Tamil dialect, the language of Jaffna. Sri Lankan Tamil dialects retain many words and grammatical forms that are not in everyday use in India, and use many other words slightly differently. The Sri Lankan Tamil dialects are less influenced by Sanskrit and the western languages, although there are western and Sanskrit loan words in day to day usage. In general Sri Lankan Tamil dialects are considered to be more conservative than the continental Tamil dialects.
Read more about this topic: Sri Lankan Tamil Dialects