The Kelpien language was the language of the Kelpiens from the planet Kaminar.
When making first contact with the Kelpien Saru, Lieutenant Philippa Georgiou showed him the universal translator in her communicator making their conversation possible. (ST: "The Brightest Star")
During the funeral of Airiam, Saru sang a song of remembrance according to the custom of his planet. (DIS: "The Red Angel")
Aradar was also heard speaking Kelpien during the harvest ritual.
Examples of spoken Kelpien Edit
Miankook bakai minakau ... tu dee ben ... toosay doorah, abrahm Saru.
- It's a pleasure to finally put a face to the name, Mr. Saru. An entirely new face, at that.
Key-zhay yoos X!ay-doo-uh-knock cow loo-ruh X!ah-nay-oo X!ine.
- I was not certain you would come.
Based on background materials tweeted by Bo Yeon Kim, literally:
"I not had-been-certain that you come possible."