Jump with energy and expectation (4)
I believe the answer is:
hope
'expectation' is the definition.
(hope is a kind of expectation)
'jump with energy' is the wordplay.
'jump' becomes 'hop' (hop is a kind of jump).
'with' is a charade indicator (letters next to each other).
'energy' becomes 'e' (physics symbol as in E=mc2).
'hop'+'e'='HOPE'
'and' acts as a link.
(Other definitions for hope that I've seen before include "'. . . . springs eternal in the human breast'" , "Feeling of expectant desire" , "Feeling of expectation or desire" , "Optimism - English-born US comedian" , "Cherish a desire" .)