Laadan dictionary
There's a single user registered on this wiki for that language (see Category:User ldn) and supposedly in an advanced level (3) for talks, but not native.
No one registered on Portal:Ldn for translating it on translatewiki.net so that language is still disabled. The only advancement is a Wikipedia Incubator, which is very basic, just a try on its main page (not active since 2021).
Beside that, the English Wikipedia does not give lot of info about this artistic language invented in 1982 and it signals issues of "single sourcing" since 1983 (probably using only the original works from Suzette Haden Elgin). The best accurate info is its original publication site (https://laadanlanguage.com/), and users of its online forum.
A good day to you both, Yug and Verdy p, and thanks for visiting my talk page.
It is true that Láadan is rather dormant in the Wikimedia sphere, largely due to various language policies of several projects. For instance, while an incubator wiki was granted, page creation is disabled on it pending LangCom review (which rather makes it difficult to add content as the only page currently in existence is the main page, whose traditional purpose is to link to other content pages).
However, speaking of the lexicon specifically, I and several others have been working in bits and pieces on both text and audio references inside and outside of Wikimedia. In Wiktionary there's wikt:en:Appendix:Láadan and in Wikidata lexicographic data there's Q35757 (see also lexemes on Ordia or additional properties on Reasonator); I have indeed started to use LiLi for recording audio but have to get back to it soon -- commons:category:Lingua Libre pronunciation-ldn.
As to how complete such a listing can eventually be, Verdy brings up a good point about the fact that the language started as a single person's invention (albeit with the help of others contemporarily), and has been expanded by various speakers since, so there are varying shades of generally 'accepted' vocab versus idiolects. The group of people who've inherited Dr. Elgin's personal effects outline a 'core' vocab of 98 lexemes plus 24 'supplemental' lexemes for a total of 122, but there are far more used in various texts. The language employs several productive schema for new words, so the vocab is open-ended; therefore I try to focus on attested usages (a prerequisite for Wiktionary in any case).