Known from some fifty short inscriptions from the first to second centuries AD, it appears to be closely related to Lycian, Milyan, and Sidetic.

The first were discovered in 1890; five years later sixteen of them were published and analyzed by Scottish archaeologist William Mitchell Ramsay.

[1] The texts are basically of a genealogical character (strings of names) and are usually accompanied by a relief picturing the deceased.

A few letters are missing (phi, chi, psi, and possibly theta), and two others were added (characters F and И, both denoting a /w/- or /v/-sound).

Two cases are assured: nominative and genitive; the presence of a dative is disputed: About the verb nothing can be said; Pisidian verbal forms have not yet been found.