Thisspiasian was the native language of the Thisspiasian species from Thisspias. Thisspiasian was a complex language that used interlocking sentences. From a phonological perspective, it makes a heavy use of sibilants (including s, z and derivates like sh). Most Thisspiasians were fluent in both Thisspiasian language and Basic, although they were only literate in their own language.