Feeble hit with little energy (4)
I believe the answer is:
lame
'feeble' is the definition.
(I've seen this before)
'hit with little energy' is the wordplay.
'hit' becomes 'lam' (to 'lam' means to hit hard**).
'with' is a charade indicator (letters next to each other).
'little' suggests taking the first letters.
The initial letter of 'energy' is 'e'.
'lam'+'e'='LAME'
(Other definitions for lame that I've seen before include "Imperfect - material" , "Halt" , "Limp - fabric" , "Disabled in the feet or legs" , "Fabric interwoven with metal threads" .)