Vastese (Vastese: Lu Uâʃtaréule or Lu indialett di lu Uašt, meaning "the dialect of Vasto") is an Abruzzese dialect of Neapolitan language spoken in the town of Vasto.
It is not spoken in towns nearby, meaning it’s a vernacular speech.
[1] The endonym — the name its speakers use for the language — is Lu Uâʃtaréule.
This term is known to have originated in the sixth century AD.
Vastese uses an open back rounded vowel /ɒ/ for the start of the word uâʃtə.