Qusqu-Qullaw (Spanish also Cusco-Collao) is a variety of the Quechua language, spoken throughout southern Peru (departments of Cusco and Puno), Bolivia, and northern Argentina. With about four million speakers, it is one of the largest dialects, along with Ayacucho Quechua. The literary standard of Southern Quechua is based on these two closely related Quechua varieties.

References

• Antonio Cusihuamán (1976): Diccionario Quechua Cuzco-Collao [- Castellano y vice versa]. Ministerio de educación del Perú