Kotava

Kotava was created in 1978 by Staren Fetcey (a pseudonym). Unlike most auxiliary languages that borrow from European languages, Kotava uses an entirely a priori vocabulary — every word is invented from scratch, avoiding cultural bias toward any language family. It features a regular agglutinative grammar, 17 consonants and 5 vowels, and a comprehensive system of verbal aspects. Kotava has a dedicated community, published literature, and a complete dictionary of over 17,000 roots. Its philosophy emphasizes true linguistic neutrality.