With higher award initially received, medal is to be neglected (2,4)
I believe the answer is:
go hang
'to be neglected' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'with higher award initially received medal' is the wordplay.
'with' is an insertion indicator.
'initially' indicates taking the first letters.
'received medal' becomes 'gong' (informal term for a medal or prize. I am not sure about the 'received' bit.).
The first letters of 'higher award' is 'ha'.
'ha' inserted into 'gong' is 'GO HANG'.
'is' is the link.
Can you help me to learn more?
(Another definition for go hang that I've seen is " Be forgotten".)