Rigveda's Buried Dravidian Words: Hidden in Plain Sight

Open the Ṛgveda (Rigveda), India's oldest surviving text, composed orally sometime between 1500 and 1200 BCE, and a handful of its words simply refuse to be Sanskrit. Linguists estimate roughly 300 "substrate words" (words absorbed from an earlier, underlying language into a dominant incoming one) sit inside its hymns. A good number of them look Dravidian. Michael Witzel, along with F.B.J. Kuiper and Franklin Southworth, has spent decades tracing these words by their phonology (sound patterns) and semantics (meanings). They are not scribal slips. They are fossils—evidence that speakers of Sanskrit and speakers of Dravidian languages lived in the same stretch of northwestern India, trading words along with grain and cattle.

Seven Words That Do Not Belong to Sanskrit

Sanskrit is an Indo-European language, built from roots you can usually trace back to a reconstructed ancestor shared with Greek, Latin, and Persian. When a Rigvedic word has no such root, carries sounds foreign to Indo-European, and lines up with reconstructed Proto-Dravidian, philologists take notice. Here are seven.

• Mayūra (मयूर, mayūra, peacock), in Ṛgveda 1.191.14. The peacock is native to South Asia, not the Central Asian steppe the early Indo-Aryans came from. Witzel notes mayūra has no Indo-European cognates but matches Proto-Dravidian *mayil (peacock), preserved in Tamil mayil and Kannada mayil. You cannot borrow a bird's name without meeting the bird, and the people who already had a word for it.
• Khála (खल, khála, threshing floor), Ṛgveda 10.48.7. Matches Dravidian *kaḷ (open ground, threshing place), surviving in Tamil kaḷam and Kannada kaḷa. Indo-Aryan speakers appear to have adopted a local farming term along with the local farming practice.
• Ulūkhala (उलूखल, ulūkhala, mortar), Ṛgveda 1.28.6, used for pressing soma. Its second element traces to the same Dravidian "grinding place" root, fused to a native prefix—borrowed food-processing vocabulary, not just a borrowed noun.
• Kuṇḍa (कुण्ड, kuṇḍa, pit or round vessel), Ṛgveda 8.17.13. Matches Proto-Dravidian *kuṇṭ-V (well, hollow), seen in Tamil kuṇṭu and Telugu kuṇḍamu.
• Muñja (मुञ्ज, muñja, sedge grass, Saccharum munja), Ṛgveda 1.191.3. This reed, used for baskets, rope, and priestly girdles, matches Tamil muñci.
• Taṇḍula (तण्डुल, taṇḍula, rice grain). Scholars trace this to a Dravidian root for husked grain rather than any Indo-European source—rice was a subcontinental crop the incoming Indo-Aryans had no inherited word for.
• Kāṇa (काण, kāṇa, one-eyed). Scholars link this to Dravidian *kaṇ (eye), a rare case of body-part vocabulary crossing over rather than just farm tools and animals.

+------------------+--------------------+------------------------+--------------------------+
| Sanskrit Word    | Rigvedic Meaning   | Reconstructed Root     | Dravidian Cognates       |
+------------------+--------------------+------------------------+--------------------------+
| mayūra (मयूर)    | peacock            | Proto-Dravidian *mayil | Tamil: mayil             |
| khála (खल)       | threshing floor    | Proto-Dravidian *kaḷ   | Tamil: kaḷam; Kan: kaḷa  |
| ulūkhala (उलूखल)  | mortar             | Dravidian *kaḷ (mod.)  | Tamil: kaḷam (modified)  |
| kuṇḍa (कुण्ड)     | pit, round vessel  | Proto-Dravidian *kuṇṭ  | Tamil: kuṇṭu; Tel: kuṇḍa |
| muñja (मुञ्ज)     | sedge grass        | Dravidian *muñci       | Tamil: muñci             |
| taṇḍula (तण्डुल)  | rice grain         | Dravidian husked-grain | disputed, no IE root     |
| kāṇa (काण)       | one-eyed           | Proto-Dravidian *kaṇ   | eye-root, disputed       |
+------------------+--------------------+------------------------+--------------------------+

When and Where

This contact happened in the northwest, not the south. The oldest hymns—the "family books," Books 2 through 7—show fewer Dravidian loans. The later books, 1, 8, 9, and 10, show noticeably more. That pattern tracks Indo-Aryan speakers moving east from the Indus system toward the Ganga-Yamuna Doab (the fertile land between the Ganga and Yamuna rivers) between roughly 1200 and 1000 BCE, meeting Dravidian speakers more often as they went. This puts Dravidian speech in the Greater Punjab—modern Pakistani Punjab and northwestern India—centuries before Dravidian languages became a mostly southern phenomenon.

Sounds, Grammar, and a Contested Outlier

The contact went past vocabulary. Retroflex consonants (ट, ठ, ड, ण—made by curling the tongue back against the palate) are rare in Indo-European languages generally but common in Sanskrit from its earliest hymns onward, a feature scholars attribute to Dravidian influence. Vedic Sanskrit's gerund (a verbal form chaining consecutive actions) works the same way Dravidian gerunds do, unlike its sister language Avestan—grammar doesn't cross between languages casually.

Then there's Brahui, a Dravidian language still spoken in Balochistan, Pakistan, far from every other Dravidian-speaking region. Some scholars read Brahui as a leftover population, proof Dravidian speech once stretched across the northwest. Others argue Brahui speakers arrived there later, in the medieval period. That argument is unresolved. But the loanwords sitting inside the Rigveda's own hymns do not depend on Brahui to make their case—they are a separate, earlier line of evidence for the same conclusion.

Read together, these words are not trivia. They are the residue of two peoples sharing fields, tools, and language on the same soil, three thousand years before either side wrote any of it down as history.