Romulan

Romulan is a constructed language from the Star Trek universe, spoken by the Romulan people. Related to Vulcan in the Star Trek lore (as Romulans are an offshoot of Vulcans), the language has been partially developed by fans. It appears in various Star Trek series and films, though it has received less systematic development than Klingon. Fan communities have worked to expand the vocabulary and grammar based on canonical appearances.