Sangheili describes multiple dialects of a language spoken by the species of the same name. Though the member species of the Covenant had their own unique languages, an advanced dialect of Sangheili, known as basic Sangheili, came to serve as the lingua franca throughout the entire Covenant Empire. And as such, many names of member species are derived from the Sangheili. Even after the fragmentation of the Covenant, many former client species of the Covenant continue to use the Sangheili language in lieu of their native tongues; Sangheili has even replaced their native language for many. A specific trade pidgin also existed within the Covenant fringe.
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