Feeble, energy dropping? Become animate (4)
I believe the answer is:
wake
'dropping? become animate' is the definition.
I can't tell whether this defines the answer.
'feeble energy' is the wordplay.
'feeble' becomes 'wa' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'energy' becomes 'ke' (K.E. is an example).
'wa'+'ke'='WAKE'
Can you help me to learn more?
(Other definitions for wake that I've seen before include "pre-funeral event" , "Open one's eyes - funeral party" , "Track left by ship" , "Deathwatch" , "Traditional watch over corpse before burial" .)