Sydetic language
Sydetic is believed to have been not the language of a particular nation, but a mixture, a border dialect of Carian, Lydian and Lycian together. Very scarce information can be researched about the language, but still it is obvious it was Anatolian and was related to Carian and Lycian. Linguists argue about its source, whether it was Hittite or Luwian. But anyway, nothing can be said quite for sure, because of the lack of knowledge.

Sydetic noun was quickly moving towards analytic structure, losing some endings. The distinction between common and neuter genders was lost because nominative case had a null ending. Genitive has -z, which is uncommon among late Anatolian languages. At all there were about four or five cases, and ablative, obviously, coincided with dative and locative.

Verbs are even more scarce in inscriptions, so we can just say that the language had two main tenses, present and preterite, with a strange ending in the 3rd person preterite: -l, maybe derived from Hittite pronominal declension. There was a participle in -rs'.