Rayalaseema Telugu is the south-western register of the language, and it is defined by contact on two sides at once. Along the Tungabhadra and the Ballari gap it takes vocabulary and intonation from Kannada; on the Chittoor and Tirupati slope it takes both from Tamil, and there is a genuinely bilingual belt where families switch language by generation. Between those edges it preserves several older Telugu forms that the coastal literary standard has dropped, which is why coastal speakers hear it as archaic and rural rather than merely different. It has less Urdu in it than the plateau register to the north, except in the Kurnool, Adoni and Kadapa towns, which were administered from Hyderabad until 1800.
Anantapur–Kurnool TeluguDravidian, South-Central
The strongest Kannada contact — shared vocabulary, and an intonation contour that a Bengaluru speaker recognises before a Vijayawada one does.
बोलने वाले: The majority register of the western districts
Kadapa TeluguDravidian, South-Central
The central basin register, closest to what is generally meant by Rayalaseema Telugu in print, with the Urdu layer of the old district town in it.
Chittoor–Tirupati TeluguDravidian, South-Central
Tamil contact — loanwords, some Tamil verb constructions, and a pilgrimage economy that keeps both languages working side by side. Many families here are Telugu-speaking Tamils or Tamil-speaking Telugus, depending on which grandparent is asked.
Yerukala (Kurru)Dravidian, South
A distinct Dravidian language, closer to Tamil than to Telugu, spoken by a formerly itinerant community across the region and now heavily shifting to Telugu.
Chenchu TeluguDravidian, South-Central
The Nallamala forest community speaks a Telugu dialect rather than a separate language, with its own forest lexicon of plants, honey and hunting that is not in any dictionary.
Lambadi (Gor Boli)Indo-Aryan, Rajasthani group
An Indo-Aryan language in a Dravidian region, transmitted at home in the tandas of Kurnool and Anantapur.