Source: The Great Interpretation of Dreams (Ibn Sirin)
Despair in a dream indicates despairing of God's mercy. It indicates failure and disappointment.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Despair indicates worry and grief. Whoever sees himself despairing will be afflicted with worry.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Despair is interpreted as worry. Whoever sees himself despairing will be afflicted with worry.