General Brazilian
ser bagunçado/ser desorganizado
most common usage in everyday Brazilian Portuguese
Rio de Janeiro
ser bagunçado/ser desembaraçado
colloquial usage common in Rio vernacular
São Paulo
ser bagunçado/ser trapalhão
trapalhão emphasizes clumsiness in addition to messiness
Portugal
ser desorganizado/ser desleixado
desleixado more common in European Portuguese for careless/messy