1. to lose courage, confidence, or moral strength; to become discouraged or demoralized
The team began to demoralize after losing three consecutive games.
O time começou a desmoralizar-se após perder três jogos consecutivos.
2. to lose one's composure or dignity; to feel ashamed or humiliated
She desmoralized herself by accepting such unfair treatment.
Ela desmoralizou-se ao aceitar um tratamento tão injusto.