Question: Casu modde, casu cundídu and casu fràzigu , translated to English means "rotten/putrid cheese", is what  primary indigenous Romance language spoken on most of the island of Sardinia ?
Sentence (from "Sardinian language"): Sardinian ("sardu", "limba sarda", "lingua sarda") or Sard is the primary indigenous Romance language spoken on most of the island of Sardinia (Italy).
Relevant evidence: Yes