Lower current cuts -- not at all (7)
I believe the answer is:
neither
'not at all' is the definition.
Both the answer and definition are adverbs. Maybe you can see a link between them that I can't see?
'lower current cuts' is the wordplay.
'lower' becomes 'nether' (as in nether regions).
'current' becomes 'I' (symbol for electric current).
'cuts' means one lot of letters goes inside another (a group of letters 'cuts' into another word).
'nether' enclosing 'i' is 'NEITHER'.
Can you help me to learn more?
(Other definitions for neither that I've seen before include "Negative word" , "Therein (anag)" , "In three (anag.)" , "Not one thing or the other" , "And not; nor yet" .)