Hopeless deficits -- I miss epic upturns, to some extent (11)

I believe the answer is:

pessimistic

I'm a little stuck... Click here to teach me more about this clue!

'hopeless' is the definition.
(similar in meaning)

'deficits i miss epic upturns to some extent' is the wordplay.
'PESSIMISTIC' is hidden backwards within the letters.
However, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for pessimistic that I've seen before include "Doubting - foreboding" , "Looking on the dark side" , "Looking on the black side" , "Hopeless!" , "Tending to look on the dark side of things" .)

I've seen this clue in The Telegraph.

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