Britannica Sources used in this answer

Why does the Toda language have an unusually large number of vowels and consonants?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Thematic map of South Asia showing the distribution of Dravidian languages, with different regions shaded or marked to indicate where specific Dravidian languages and subgroups are spoken. Most languages are concentrated in southern and central India, with some northern outliers in Pakistan, Afghanistan, and eastern India. A key identifies the languages by number and subgroup, and striped areas indicate regions where several subgroups overlap. — Dravidian languages Distribution of Dravidian languages.

The Toda language possesses an unusually large inventory of 14 vowels and 37 consonants, which is the highest count among all Dravidian languages.

Contrary to the assumption that such complexity might arise from external influence, these features developed internally through numerous sound changes rather than through the borrowing of words or sounds from other languages. Like other languages spoken by Scheduled Tribes in the Nilgiri Hills, Toda has preserved the distinct three-way stop consonant system—dental, alveolar, and retroflex—that characterized the Proto-Dravidian parent language.1