conlanger

noun

1. Someone who creates constructed languages (conlangs).

   “The fact that the Internet has given visible shape to communities of invented language proponents through web sites and chat rooms for enthusiastic conlangers (‘language constructors’) has probably done little to dispel its reputation as a somewhat unusual and, to all intents and purposes, intangible undertaking.”

   “The split was between two groups. The first was composed of people interested in quietly developing and discussing the languages they crafted for science-fictional worlds, what-if-a-language-did-this playfulness, or Tolkienesque fun (the true conlangers).”

   “The goal of a conlanger, a language creator, is to realize a linguistic system that′s both unique and authentic—something that doesn't exist anywhere on Earth, but which a linguist wouldn′t be surprised to find in the wild.”

   “The personalization of language allowed by conlanging is what draws many conlangers to the hobby. […] However, Woodbury is quick to remember Marc Okrand, a classmate of his from graduate school at the University of California at Berkeley, who was both an accomplished linguist and a conlanger. Okrand invented Klingon, a language he intentionally designed to sound “alien.””

   “No conlanger could hope to create a language with the depth and richness of a natural language.”