General Brazilian
desculpa contratual; motivo de dispensa contratual
Standard usage in commercial and legal contexts
São Paulo
defesa contratual; excludente contratual
More commonly used in São Paulo's business hub
Rio de Janeiro
motivo de exoneração contratual
Alternative phrasing common in RJ legal circles
Portugal
escusa contratual; causa de dispensa
Portuguese usage follows Civil Law tradition with different terminology