Experience ground trembling with energy (7)
I believe the answer is:
undergo
'experience' is the definition.
(to undergo something is to experience it)
'ground trembling with energy' is the wordplay.
'trembling with' indicates anagramming the letters.
'energy' becomes 'e' (physics symbol as in E=mc2).
'ground' mixed up with 'e' gives 'UNDERGO'.
(Other definitions for undergo that I've seen before include "Endure or be subjected to" , "Submit to an experience" , "Endure - urged on (anag)" , "put up with" , "Endure for guerdon" .)