Lacking strength with low energy, revive (4)
I believe the answer is:
wake
'revive' is the definition.
(I know that revive is a more specific form of bring around)
'lacking strength with low energy' is the wordplay.
I cannot quite see how this works, but
'with' could be 'w' (abbreviation) and 'w' is present in the answer.
'energy' could be 'ke' (K.E. is an example) and 'ke' is found within the answer.
A single letter 'a' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for wake that I've seen before include "Finnegans 19, Joyce" , "Vigil beside the dead" , "Ship's wash" , "Aftermath" , "Funerary party" .)