Neither worse nor better, what's more (2,4)
I believe the answer is:
as well
'more' is the definition.
(thesaurus)
'neither worse nor better' is the wordplay.
I cannot really understand how this works, but
'better' could be 'well' (similar in meaning) and 'well' is found in the answer.
The remaining letters 'as' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'what's' is the link.
Can you help me to learn more?
(Other definitions for as well that I've seen before include "To boot" , "on top" , "Appropriate" , "A swell sort of addition" , "with equal effect" .)