Hidden in Plain Sight: The Dravidian Words Buried in the Rigveda

Open the Rigveda—India's oldest sacred text, composed sometime between 1500 and 1200 BCE—and you will find words that do not belong to Sanskrit. Linguists estimate roughly 300 such "substrate words" exist within its hymns, many of them likely Dravidian. Scholars like F.B.J. Kuiper, Michael Witzel, and Franklin Southworth have painstakingly traced these words, examining their phonology and semantics to understand their origins. These are not errors but linguistic fossils, offering tangible proof of coexistence between speakers of different language families in ancient northwestern India.

More than a dozen Dravidian loanwords appear in the Rigveda's Sanskrit hymns. A loanword is a word borrowed from one language and adopted into another—evidence that speakers of both languages existed in the same place at the same time, interacting and learning from each other. Examples include mayūra (peacock), ulūkhala (mortar), khála (threshing floor), and kuṇḍa (pit).

Few discoveries in Indian history are as elegantly simple as this: the very text that Sanskrit speakers composed contains words they borrowed from Dravidian speakers. The implications are profound. They indicate that Dravidian people were not confined to the south. Dravidian languages were spoken in the northwestern part of the subcontinent during the Vedic period, the very region where the Vedic peoples themselves lived and composed their hymns.

The Peacock Problem

Take mayūra, the Sanskrit word for peacock. It is ubiquitous in classical Indian literature and seems thoroughly at home in Sanskrit. Yet scholars have long known it does not belong there by descent. The word mayūra is considered a highly persuasive Dravidian loan because it is not further analyzable within Sanskrit etymology, lacks parallels in Indo-European dictionaries, and is phonetically distinctive and characteristic of the South Asian linguistic landscape, with its closest phonetic parallels found in Dravidian languages as noted by Michael Witzel.

It is a borrowed word. Sanskrit speakers encountered peacocks—a bird unknown in Iran or Central Asia—and adopted the Dravidian name for them. This specific instance, as detailed by Witzel, highlights the cultural and environmental exchanges occurring at the time.

Tools, Trade, and Contact

The loanwords often cluster thematically, suggesting they were integral to everyday life. These words cover local flora and fauna, agriculture, and artisanship, as well as terms for toilette, clothing, and household objects. In other words, these were the words Sanskrit speakers needed when living among Dravidian speakers—names for local crops, tools, animals, and everyday items.

Khála (threshing floor) and ulūkhala (mortar) are agricultural terms, language associated with settlement and grain processing. They suggest not conquest or displacement, but the everyday reality of two communities learning to live and work together. Some linguists, including Franklin Southworth, explain this asymmetrical borrowing—where Sanskrit borrowed heavily from Dravidian but not vice versa—by arguing that Middle Indo-Aryan languages were built on a Dravidian substratum. They posit that native Dravidian speakers may have learned and adopted Indic languages due to elite dominance or social pressures.

More Than Words: Sounds and Grammar

The linguistic borrowing went deeper than vocabulary. The introduction of retroflex consonants—those produced by the tongue tip raised against the middle of the hard palate—into Indo-Aryan languages has been credited to contact between speakers of Sanskrit and Dravidian languages. Retroflex consonants are unusual in Indo-European languages but are a common feature of Dravidian. They are present in the Rigveda itself.

Scholar Bhadriraju Krishnamurti observed that grammatical features of Vedic Sanskrit not found in its sister language, Avestan, appear to have been borrowed from Dravidian languages. This includes the gerund, which functions similarly in both language families. These are not minor details. Grammar is often considered the fundamental structure of a language. To borrow grammatical structures suggests a deep internalization of another language's conceptual framework.

Tradition holds that the Indo-Aryans migrated into the subcontinent as pastoralists in the second millennium BCE. Evidence shows they did not arrive to a linguistic vacuum. Vedic Sanskrit interacted with pre-existing ancient languages of the subcontinent, absorbing names of newly encountered plants and animals. Ancient Dravidian languages, in turn, influenced Sanskrit's phonology and syntax.

The North-South Question

Historians have long asked: where was Dravidian spoken in ancient times? A well-established hypothesis holds that Dravidian speakers were once widespread throughout India, including the northwest region. This conclusion is supported by the presence of Dravidian words in the Rigveda, the earliest known Indo-Aryan literary work.

Today, speakers of Dravidian languages live primarily in the south. However, the Brahui language—a Dravidian outlier spoken in Balochistan, Pakistan—complicates this picture. Some scholars interpret Brahui as a relict population, perhaps indicating that Dravidian languages were formerly much more widespread before being supplanted by incoming Indo-Aryan languages. Yet this inference remains contested among specialists. If Dravidian did survive so far northwest, however, it almost certainly stretched across a significant portion of the Indian peninsula during the Vedic period.

Scholars Debate the Details

Scholarly consensus points to significant contact, but specific details remain subjects of debate. Some scholars find Dravidian loans only from the middle Rigvedic period, suggesting that linguistic contact between Indo-Aryan and Dravidian speakers occurred as the Indo-Aryans expanded into and beyond the Punjab. Others identify more loanwords earlier in the Vedic corpus. Scholar F.B.J. Kuiper, in his extensive work, identified 383 specifically Rigvedic words as non-Indo-Aryan—roughly 4% of its vocabulary. Not all of these are certainly Dravidian; some may derive from other, now-lost languages of the subcontinent.

Scholars also debate what convergent linguistic features actually indicate. Evidence shows that the Indo-Aryan and Dravidian language families developed convergent structures in their sound systems and grammar. But scholars debate whether this contact directly caused these convergences, or whether some features arose independently due to typological pressures—for example, whether the quotative particle (used to mark cited speech) developed in both families separately rather than through borrowing. The precise timing and mechanisms of this contact remain contested ground.

Yet the cumulative evidence is substantial, pointing towards speakers of these two ancient language families living alongside each other in the second millennium BCE. They exchanged words and linguistic features that have left permanent marks in Sanskrit.

What the Words Say

The loanwords are humble yet powerful documents. They speak not of conquest or surrender, but of proximity and interaction. A Vedic poet, encountering the word mayūra from a neighbor, found it useful and incorporated it into a hymn. That hymn has survived three thousand years. Today, when we read it, we are reading a moment of human contact—two languages touching, one borrowing from the other, two peoples sharing a landscape.

The Rigveda is often thought of as the founding text of Indian civilization, the voice of the Indo-Aryans and their gods. It is. But woven into its very language are the voices of those who lived there before, and alongside. The words are there. All we have to do is listen.