The Haliian language is spoken by the Haliians, the inhabitants of the planet Halii, which is probably a Federation member.
Aquiel Uhnari, a Haliian Starfleet officer who worked aboard Relay Station 47 in 2369, spoke Haliian as her native language.
Geordi La Forge spoke a little Haliian, claiming to have picked it up while he traveled with his parents as a child, but it is more likely he learned it from watching Lieutenant Uhnari's logs. (TNG: "Aquiel")
Established phrases
Batar al nalia.
- But not on me.
(in response to, "The taste grows on you.") The English translation was in the script.
Oumriel.
- "Special Friend" or "Goodbye". (No translation available)
Also, the Horath, a Haliian song sung at the Batarael has all Haliian lyrics.
Conjectural phrases
(NOTE: The following was in a deleted scene, the English translation was taken from the script.)
Nelo, nelo.
- A little, a little.