Universalglot

Universalglot is an a posteriori international auxiliary language published by the French linguist Jean Pirro in 1868 in ''Tentative d'une langue universelle, Enseignement, grammaire, vocabulaire''. Preceding Volapük by a decade and Esperanto by nearly 20 years, Universalglot has been called the first "complete auxiliary-language system based on the common elements in national languages". Pirro gave it more than 7,000 basic words and numerous prefixes, enabling the development of a very extensible vocabulary.

In his book describing his own language project Novial, Otto Jespersen praised the language, writing that it is "one to which I constantly recur with the greatest admiration, because it embodies principles which were not recognized till much later". The magazine Cosmoglotta for the auxiliary language Interlingue (then known as Occidental) also praised the language in 1931 for its readability and analysis of international words (in particular the suffix -ion) and regretted that its creator had been forgotten in contrast with the creators of Esperanto and Volapük:Monuments have been erected to the glory of Zamenhof and the name Schleyer has been engraved in marble. Their precursor and master, Pirro, has been honored - with oblivion.