Kamayo is a language widely used by the Mandayas in the Davao Oriental areas. It is closely related to Tandaganon and Surigaonon. Dialect variations are caused by mixed dialect communications such as the Cebuano language in barangays Mangagoy & Pob. Bislig. The towns of Barobo, Hinatuan, and Lingig has a distinct version spoken. A suffix is usually added in most adjectives; for example, the word "gamay" in Cebuano (English: small) is gamay-ay in Bislig while the word "dako" (English: big) is spoken as dako-ay.