Pejorative term for South Americans by Spaniards, but now used by Central Americans and North Americans who speaks Spanish language. The voice is an ethnic label that comes either from the Spanish SUDA-meri-CA-no (South American) or that word with a suffix. Sometimes Brazilians are not Sudacas, because they don't speak Spanish. And they can't understand it.
"Cállate sudaca!" or "Shut up sudaca!"
"Argentinians are Sudacas" or
"Bolivians are Sudacas" or
"Peruvians are Sudacas",