Old Galactic Standard
From Wookieepedia, the Star Wars wiki.
Old Galactic Standard was a combination of alien (Durese and Bothese) and early Human languages meshed together.
It was a slang or jargon of traders and spacers. That way, it spread throughout the galaxy and others, non-spacers, also learned it in order to be able to communicate with other species; eventually it was adopted officially as the language of Coruscant and the Galactic Republic.
It was the precursor of Galactic Basic Standard, and was still in use as of 11,500 BBY. Arden Lyn and Halbret were speakers of this language.
