Kaminoan was the language of the sentient Kaminoan species of the planet Kamino. Most members of the species only spoke Kaminoan, but those that dealt with offworlders were taught and engineered to speak Galactic Basic Standard and other languages.
Behind the scenes
The Kaminoan language was first mentioned in the new Star Wars canon in Rise of the Separatists, a 2019 supplement to Fantasy Flight Games' series of Star Wars roleplaying products. It originated in the Star Wars Legends continuity, where it first appeared in the 2002 young readers novel Boba Fett: The Fight to Survive, which was written by Terry Bisson.