Despairing is a word that describes a feeling of hopelessness and loss of faith in oneself or in the world. Synonyms for despairing include dejected, despondent, hopeless, forlorn, and crestfallen.
Dejected and despondent are often used interchangeably with despairing, as they all suggest a feeling of deep sadness and hopelessness. Forlorn suggests a sense of abandonment and isolation. Hopeless suggests an absence of any possibility of change or improvement. Crestfallen implies a feeling of disappointment and defeat.
Overall, the synonyms for the word despairing capture the emotional state of feeling lost, defeated, and without hope.