This question asks for Esperanto words taken from non-Indo-European languages. Here I want to know: Are there Esperanto words that are not taken from any previously existing language, but are created specifically for Esperanto? What are examples of them?
Right out of my mind I can think of Usono "USA", are there more of them?
Some affixes don't bear obvious resemblance to equivalents in other languages, such e.g. ul. The correlatives are also mostly a priori: some prefixes, such as neni- or ki-, are probably influenced by other languages, but no other language Zamenhof knew of has words close to ĉiam or iu.
Edzo also doesn't have a clear origin. Wiktionary says about edzino:
Perhaps a back-formation from Yiddish רביצין (rebetsin, “rebbetzin, rabbi's wife”). Zamenhof's explanation that it was from German Kronprinzessin (“Crown Princess”) is thought to have been an attempt to avoid antisemitism. Reanalysed as edzo (“husband, spouse”) + -ino (feminine suffix).
It seems very convoluted to me.
Yes, although there are not much of them. While the correlative table has inspiration in other languages, some words in the table have no derivation at all from other languages, and instead come completely out of the applied system in Esperanto, like "iom".
Also some derived words have nothing to do any more with the original components, like necesejo.
(Usono comes from the English Usonia, which only had limited popularity in English.)
Many of the affix based ones, for example: "umadi", "ilaro", "ege", "mala", ...
How about kabei?
Kabei is a verb that comes from the Esperanto name of Kazimierz Bein, Kabe. So it's not directly derived from any particular language unless you'd want to count the etymology of Kabe's non-Esperanto name.
Here's kabei defined, if anyone's curious:
From vortaro.net:
kabei. Agi kiel Kabe, kiu, estante tre vigla E-isto, subite k tute ĉesis verki en E.
In English, translated by me:
To act like Kabe, who, having been a very active Esperantist, suddenly and completely stopped working (writing) in Esperanto.
Personally I have seen and used this word occasionally not just for leaving the Esperanto movement suddenly, but for being active and making a considerable effort for any type of movement/cause and then suddenly dropping it, or sometimes simply to describe being interested in something and participating in it for a time but then losing interest and "disappearing" from the scene.
Another good and widely-used example is probably ‘mojosa’, whose origins are explained e.g. here: What is the origin of the word "mojosa"?
