Estonia has two words for AI, and argues about which one

English settled on one term: artificial intelligence. Estonian has two — tehisintellekt and tehisaru — and a quiet but persistent argument runs between them.

This is a small thing that turns out to be a useful window into how a language absorbs a new concept.

The two words#

Tehisintellekt is older and more common. It is a direct loan translation: intelligence becomes intellekt. This is the word that dominates legislation and official documents.

Tehisaru is shorter, more native, and preferred by linguists. The Estonian terminology commission at the University of Tartu recommends it. The arguments: short, clear, unambiguous, self-explanatory and comfortable in speech.

Who uses which#

In practice the picture is mixed.

Legislation and translations of European Union texts lean heavily on tehisintellekt. Linguists and part of the academic community prefer tehisaru. The press uses both, often alternating within a single article to avoid repetition.

In everyday speech most people just say AI.

Why it matters#

Three reasons, none of which is pure linguistic purism.

Search. If you only ever write one variant, the people searching for the other will not find you. That is an entirely practical problem for anybody publishing about AI in Estonian.

Clarity. Intellekt carries a connotation of human reasoning that a language model does not have. Aru is a more modest word in that respect — arguably a more honest one.

Consistency. When one institution uses one term and another uses the other, terminology becomes confusing as documents move between them.

The general lesson#

Every language that did not invent a technology has to decide whether to borrow the word or build one. Estonian is doing both at once, in public, and the outcome is not settled.

If you work across languages, this is worth knowing: the term you search for determines what you find, and in Estonian you have to search for both.