What Is a Conlang?
Constructed Languages
Course 1 · Chapter 1 · What Is a Conlang?
Most languages were never designed. English, Hungarian and Japanese grew over centuries as millions of speakers talked, borrowed and changed things, with nobody in charge. A constructed language, or conlang, is the opposite case: a language that one person or a small group deliberately designed, usually by writing down its sounds, grammar and vocabulary before anyone spoke it. This chapter draws the map for the whole course: what counts as a conlang, why people build them, and the three main families they fall into.
Natural and Constructed
A natural language is one that arose through ordinary use by a community: it has no founder and no date of birth. A constructed language has a founder (or a committee), a design document and a moment when it was first published. The line is not perfectly sharp, because natural languages are shaped by planning in many places:
| Example | What was planned | Is the language a conlang? |
|---|---|---|
| Standard languages | Spelling reforms, dictionaries and an official standard are set by academies and governments | No: the underlying language grew naturally |
| Modern Hebrew | An ancient written language was revived as an everyday spoken language in the late nineteenth and twentieth centuries, with new words coined for modern life | No: it was revived from an existing language, not designed from scratch |
| Esperanto | Everything: sounds, grammar and a starting vocabulary were published in 1887 by L. L. Zamenhof | Yes |
| Klingon | Designed by the linguist Marc Okrand for the Star Trek films, from 1984 onwards | Yes |
A useful test is origin, not size. Ask: was this language put together on purpose, by named people, before it had speakers? If yes, it is a conlang, however many people speak it now.
Why People Build Languages
Almost every conlang has one or more of four main motives. Naming them makes the rest of the course easier to follow, because the motive explains most of the design choices.
| Motive | The goal | What the design emphasises |
|---|---|---|
| Communication | Let people who share no language talk to each other fairly | Easy to learn: regular grammar, familiar roots, simple sounds |
| Logic and thought | Test an idea about language, thought or meaning | Precision: no ambiguity, a grammar tied to logic |
| Art and fiction | Give a fictional people a voice that sounds believable | A distinctive sound, a feeling of history and culture |
| Play | Enjoy designing and using a language for its own sake | Whatever the designer finds interesting |
Three Kinds of Conlang
The motives line up with three commonly used labels. Conlang communities use them informally, so treat them as a map and not as sharp boxes:
1. Auxiliary languages (auxlangs)
An international auxiliary language is meant as a second language for everyone, a neutral bridge between speakers of different first languages. Esperanto is the best-known example. Chapter 2 traces the history that led to it, and Chapter 3 looks at Esperanto, Ido and Interlingua in detail.
2. Engineered languages (engelangs)
An engineered language is built to test or demonstrate a principle. Lojban, for example, was designed so that its grammar follows predicate logic and its sentences are unambiguous. Toki Pona, created by Sonja Lang and first published in 2001, tests a different idea: that a tiny vocabulary, on the order of a hundred and twenty words, can still carry meaning when words are combined and context does the rest. Chapter 4 explores both.
3. Artistic languages (artlangs)
An artistic language is built for beauty, a fictional world or the pleasure of invention. J. R. R. Tolkien's Elvish languages, Klingon, Dothraki and Na'vi all belong here. The designer does not aim at an easy international bridge: the aim is a language that feels as though a real people speak it. Chapters 5 and 6 cover artlangs for screen and page, and Tolkien's languages in particular.
| Language | Kind | Main motive | Designer and date (approx.) |
|---|---|---|---|
| Esperanto | Auxlang | Communication | L. L. Zamenhof, 1887 |
| Lojban | Engelang | Logic and thought | The Logical Language Group, developing James Cooke Brown's earlier Loglan |
| Toki Pona | Engelang | Logic and play | Sonja Lang, 2001 |
| Klingon | Artlang | Fiction | Marc Okrand, from 1984 |
| Quenya and Sindarin | Artlangs | Art, then fiction | J. R. R. Tolkien, from the 1910s onward |
Is a Conlang a Real Language?
The answer depends on what you mean by "real", and linguists give a measured one. A conlang can have every design feature from Introduction to Linguistics, Chapter 1: arbitrary signs, a small set of sounds that make up many words, the ability to talk about absent things, and unlimited new sentences. In that sense a fully described conlang is a language. What it lacks at the start is the one thing the natural languages all have: a long history of speakers. That history changes a language by making it irregular, because speakers shorten, merge and reinterpret things over time. Designed languages start regular, and become less so only if enough people use them for long enough. Chapter 11 returns to this.
- "A conlang has no grammar of its own." Every serious conlang has one, and often a more explicit one than a natural language, because the designer had to write it down.
- "Esperanto failed." That depends on what success means. It did not become a universal second language, but it has a stable community, a large literature and international meetings. Chapter 3 returns to this.
- "Klingon is just English with different words." No: it has its own word order (object, verb, subject), prefix and suffix system, and sounds, all of which you may have met in Klingon Grammar 1.
Hands-On Exercises
Sort five languages by kind and motive. For Esperanto, Klingon, Lojban, Toki Pona and Quenya, give the kind (auxlang, engelang or artlang) and the main motive (communication, logic and thought, art and fiction, or play), with one sentence of reason. Mark any language you think fits more than one kind.
📄 View solutionApply the origin test. Decide whether each is a conlang, and explain: (a) Modern Hebrew; (b) Esperanto; (c) Standard German; (d) a language invented by two children to talk secretly; (e) Klingon.
📄 View solutionWrite a one-sentence purpose statement for a language you might build, in the form "This language exists so that …". Then say which kind (auxlang, engelang or artlang) it is, and name one design choice that follows from the purpose.
📄 View solutionChapter 1 Quick Reference
- Natural language: grew in a community, no founder. Constructed language (conlang): designed on purpose, by named people, before it had speakers
- Four motives: communication, logic and thought, art and fiction, play
- Auxlang = international bridge (Esperanto). Engelang = tests an idea (Lojban, Toki Pona). Artlang = beauty or fiction (Klingon, Tolkien's languages)
- The kinds overlap: ask what the language is mainly for
- A conlang can have every design feature of language; it starts regular and becomes irregular only with long use
- Origin test: put together on purpose, by named people, before it had speakers