Rioplatense Spanish (), also known as Rioplatense Castilian, is a variety of Spanish spoken mainly in and around the Río de la Plata Basin of Argentina and Uruguay. It is also referred to as River Plate Spanish or Argentine Spanish. Being the most prominent dialect to employ "voseo" in both speech and writing, many features of Rioplatense are also shared with the varieties spoken in Eastern Bolivia and Chile. This dialect is often spoken with an intonation resembling that of the Neapolitan language of Southern Italy, but there are exceptions. The word employed to name the Spanish language in Argentina is "castellano" () and in Uruguay, "español" (). See names given to the Spanish language.