Clever switch in energy economy? (4)
I believe the answer is:
cute
'clever' is the definition.
(I've seen this in another clue)
'switch in energy economy?' is the wordplay.
I cannot quite see how this works, but
'switch' could be 'cut' (cutting is a kind of switching) and 'cut' is found within the answer.
'energy' could be 'e' (physics symbol as in E=mc2) and 'e' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for cute that I've seen before include "Delightfully pretty or dainty" , "Pretty and attractive" , "Shrewd" , "Small, delightful" , "Appealing -- cunning" .)