Usages of desapontado
O Pedro ficou desapontado com a nota, mas a professora estava satisfeita com o seu progresso.
Pedro was disappointed with the grade, but the teacher was satisfied with his progress.
Eu também não estou totalmente satisfeito, mas não quero ficar muito desapontado; vou estudar mais.
I am also not totally satisfied, but I don’t want to be very disappointed; I am going to study more.
Elon.io is an online learning platform
We have an entire course teaching Portuguese grammar and vocabulary.