Tamil is considered as the oldest language amongst the Dravidian languages.
Many dialects; most languages in India come from one of two families: Indo-Aryan or Dravidian.
Of or pertaining to the Tamils, or to their language., One of a Dravidian race of men native of Northern Ceylon and Southern India., The Tamil language, the most important of the Dravidian languages. See Dravidian, a.
No, neither Finnish nor Estonian is a Dravidian language. Dravidian languages are predominately spoken in South Asia, whereas Finnish and Estonian are closely related Uralic languages.
As my knowledge the tamil is oldest language among dravidian language
Brahvi
Indo-Aryan and Dravidian are the two Indian Scripting languages.
Becos Tamil is the oldest of all the Dravidian languages. Epics are written in Tamil. Above all, Tamil is the only Indian language which is a National language in many countries, like Srilanka and Singapore.
Dravidian
Several languages in India are related to Sanskrit, including Hindi, Marathi, Gujarati, Bengali, and Kannada. These languages belong to the Indo-Aryan language family, which has strong historical ties to Sanskrit.
Tamil, by a huge margin. Among all dravidian languages, its Tamil which is spoken most by people of other dravidian languages and people of other Indian languages. Looking worldwide, apart from Tamilians in India, countries like Malasia, Singapore, Srilanka & Mauritius have Tamilians. Also Tamil is a National / Admin language in these countries.
Telugu, Tamil, Kannada, and Malayalam are all Dravidian languages spoken in South India. They share a common linguistic origin and belong to the same language family. They also have similar grammar rules and linguistic structures.