How did Dravidian languages influence Indo-Aryan phonology?

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The long-standing proximity between Dravidian languages and Indo-Aryan languages led to significant convergent features in their phonological systems. Scholars attribute several major developments in Indo-Aryan phonology to this Dravidian influence:1

  • Proliferation of Retroflex Consonants: The emergence of retroflex consonants—sounds produced by curling the tongue tip toward the hard palate—is a hallmark of this influence, as these sounds were not present in other Indo-European languages.1
  • Consonant Modifications: Dravidian contact contributed to the voicing or weakening of intervocalic stop consonants in Pali and Prakrit, as well as the simplification of consonant clusters (for example, the transition of Sanskrit aṣṭa- to Prakrit aį¹­į¹­ha- for "eight").1
  • Word-Base Resolution: The development of specific word-base structures, such as (C)V:C or (C)VCC, occurred by resolving older (C)V:CC types, as seen in the evolution of Sanskrit dÄ«rgha- into Prakrit dÄ«gha-/diggha- ("long").1