Argentina
Buenos Aires Spanish (porteño) uses 'vos' instead of 'tú' for second-person singular address throughout all casual registers, with distinctively shifted verb endings: 'sos' replaces 'eres', 'tenés' replaces 'tienes', and command forms like 'tomá' replace 'toma'. The dialect features sh-yeísmo — both 'll' and 'y' are pronounced with a 'sh' sound, making 'yo' sound like 'sho' and 'lluvia' like 'shuvia'. Final consonants are clearly articulated, and the Italian immigrant influence on Buenos Aires gives porteño speech a melodic rising-falling intonation not found in other Latin American varieties.