Expectation (4)
I believe the answer is:
hope
'expectation' is the definition.
(I know that hope is a type of expectation)
This is the entire clue.
(Other definitions for hope that I've seen before include "writer" , "Optimism - English-born US comedian" , "It alone stayed in Pandora's box" , "Anticipation" , "'. . . . springs eternal in the human breast'" .)