despondent

If you are despondent, you are discouraged, very sad, and without hope. If you are depressed, you might describe your mood as despondent.

This adjective is often followed by over or about: He was despondent over the loss of his job. If you want a noun, use the words despondency or despondence. The adjective despondent is from Latin despondens, from despondere "to lose courage, give up," from the prefix de- "from" plus spondere "to promise." The Latin words originally referred to promising a woman in marriage.

Definitions of despondent
1

adj without or almost without hope

despondent about his failure”
Synonyms:
heartsick
hopeless
without hope because there seems to be no possibility of comfort or success