Conlangs with over 10,000 words

Because scrappers create and scrap so many conlangs, the vast majority of conlangs have a lexicon that doesn't get very large by the time they're scrapped. In fact, many conlangs have about 7 to 10 words by the time they're scrapped, and some never have a single word of lexicon created.

In this forest of creosote bushes, however, there are some sequoias that have astoundingly large lexica, such as Talossan, Arka, or Spocanian. Occasionally, a conlang will become known mainly for its large lexicon size (as happened with Arka).

Here is a list of the largest of the large -- conlangs that have at least ten thousand words in their lexicon.

Excluded are:

• Superset and subset languages.
• Conlangs that consist of making only a few predictable changes to an existing language, such as Muphridian.
• Conlangs whose lexicon consists of an unedited computer-generated data dump, such as Nunihongo. (Computer-generated conlangs whose lexicon has been cleaned up, such as Classical Yiklamu, are eligible for this list).
• Computer-generated material for making new words for a conlang, such as that made by Larry Rogers of Michigan (BA Linguistics, Michigan State Univesity, 2009) for his expansion of Marc Okrand's Atlantean language. This was not intended as a conlang dictionary but merely as material which could be used to make new words, computer-generated words approximating the phonology of the original words.

Although James Landau, who has researched this list, has done quite an extensive search, there are no doubt at least a few conlangs that belong on this list that he's missed out on. Anyone is free to add them here.

The list

• about 10,000 Lingwa de planeta (Lidepla) - Dmitri Ivanov, A. Lysenko and others; worldlang based on 10 languages
• 10,000 Farlingo - Vladimir Farber & Matvei Farber; auxlang based on SAE languages, Russian, Hebrew and Esperanto
• 10,000 Faudanian - Josh Hien; a posteriori personal language
• 10,000 Fith - Jeffrey Henning; alien language with "last in, first out" structure
• 10,000 Lugasuese - Jurre Lagerwaard; spoken on the planet Aranii, based on Germanic and Tolkienian languages
• 10,000 Unish - Language Research Institute, Sejong University; auxlang based on 16 languages from many phyla
• more than 10,000 Loglan - James Cooke Brown; logical language with a posteriori lexicon
• 10,910 Town Speech/Urban Basanawa - k1234567890y; West Germanic artlang (its Germanic nature obscured by writing system and large amount of Sino-Xenic vocabulary)
• 11,000 LANGUST - Grigoriy Korolev; auxlang based on 45 "atoms", aUI-style
• over 11,000 Uropi - Joël Landais; zonal language for Europe based on Indo-European roots
• 11,200 Paolanté - B. Christopher Suchsland-Gutiérrez; fictional Romance language
• 11,500 Interslavic - Juraj Križanic; Slavic zonal language
• about 12,000 Rodinian - Rodiniye; worldlang repurposed as an artlang
• 12,000 HOOM - Rood Hume; intuitive a priori auxlang for the universe
• 12,000 Tundrian - Gábor Sándi; Romance language spoken in the fictional country of Tundria
• 14,750 Kavrinian - Ultimate Ridley et al.; collaborative language spoken in Lhavres on the planet Sahar; most words created by others
• 12,130 Géarthnuns - Douglas Koller; a priori language spoken on a fictional island in the Sea of Japan
• 12,363 Mango - Natalia Gruscha; spoken by the Tiger People of the planet Pii, based on Indo-Aryan languages
• 13,000 Mila - Gary Taylor-Raebel; set in an alien colony, invented as a fauxlang but has since evolved naturally
• 13,552 Tomato - Catty; innovative a priori auxlang
• 14,000 Europeano - Jay Bowks; Euroclone
• 14,000 Ido - Louis de Beaufront, Louis Couturat; Esperanto spinoff
• 14,787 Minhyan - Jeffrey Henning; VSO fictional diachronic language with a priori vocabulary
• 15,000 Chaldon-Siberian - Yaroslav Zolotaryov; purification of Slavic languages without Old Church Slavonic borrowings
• around 15,000 Deyryck - Threr; fictional language spoken in the multiverse of Alaaban
• 16,000 Otg - Spencer Spurgeon; quirky fictional diachronic language inspired by Celtic and Turkish
• 16,627 Arka - Seren Arbazard; spoken on the planet Kaldia
• over 17,000 Sambahsa-Mundialect - Dr. Olivier Simon; worldlang based on PIE, Arabic, Chinese, Indonesian, Swahili and Turkish
• more than 17,000 Kotava - Staren Fetcey; a priori auxlang
• 19,640 Itlani - James E. Hopkins; spoken on the planet Itlán
• 19,700 Noxilo - Sentaro Mizuta; worldlang that allows for many different word orders
• 20,000 Aixosixomi - Alexander M. Koch; language of a fictional hunter-gatherer people of Earth
• 20,000 Sydvetlish - Matheus Filipe da Silva Leal; Germanic auxlang
• over 20,000 Lingua Franca Nova - George C. Boeree; Romance auxlang with creole grammar
• around 21,000 Celinese - Andy Ayres; macrolanguage spoken on the planet Lorech
• 21,715 Lojban - The Logical Language Group; logical language, a reform of Loglan
• 22,956 Pantakakiano - Javier Valladolid Antoranz; used in the novel El sueño en verso
• over 25,000 Spocanian - Rolandt Tweehuysen; a priori fictional language from the Atlantic phylum
• 25,234 FeNeKeRe - Jonathan Sodt; a priori fauxlang of Earth's Dragon People of the arts, with millions of possible names
• 26,339 Blissymbolics - Charles K. Bliss; pasigraphy
• 26,352 Sermo - Jose Soares Da Silva; Euroclone
• over 35,000 Talossan - R. Ben Madison; micronational language, Romance but lacking a consistent derivation from Latin
• 39,765 Nuu - Thomas Keyes; a priori engelang/artlang spoken on Ung
• 44,000 Slovio - Mark Hucko; Slavic zonal language
• 46,950 EDA/Edanic - Arne Arotnow; Euroclone based on Italian
• 51,831 Vedanic - Arne Arotnow; reform of Edanic
• over 60,000 Interlingua - International Auxiliary Language Association; Euroclone
• 68,000 Kankonian - James Landau; spoken on the planet Kankonia in the Lehola Galaxy
• some 75,000 Neo - Arturo Alfandari; Euroclone
• 77,000 Esperanto - Ludwig Lazarus Zamenhof; auxlang and the world's most successful conlang
• over 83,000 xuxuxi - John Cowan; based on the same principles as Classical Yiklamu
• 91,591 Classical Yiklamu - Mark P. Line; engelang with computer-generated vocabulary based on WordNet and no derivation