Paradise Lost, not a complete loss of hope (7)
I believe the answer is:
despair
'loss of hope' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for despair that I've seen before include "The feeling that nothing will turn out well" , "Abandon hope" , "An unhappy state" , "Praised (anag) - lose hope" , "First appearance" .)