Oktarian was the native language of the species of the same name who lived on Oktaro, including Mayvlin Trillick. Expletives in the language included the word "Oktar" paired with several other Oktarian words.
- An expletive:
The Oktarian language first appeared in the 2018 junior novel The Mighty Chewbacca in the Forest of Fear! by Tom Angleberger.