Government file concerned with reaching good understanding (8)
I believe the answer is:
grasping
'understanding' is the definition.
(to grasp something is to understand it)
'government file concerned with reaching good' is the wordplay.
I cannot quite see how this works, but
'government' could be 'g' (abbreviation for government) and 'g' is located in the answer.
'file' could be 'rasp' (rasp is a kind of file) and 'rasp' is located in the answer.
'good' could be 'g' (abbreviation) and 'g' is present in the answer.
'concerned with' could be 'in' (I've seen this in other clues) and 'in' is found within the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for grasping that I've seen before include "Greedy, avaricious" , "Gangs rip, being greedy" , "Holding" , "Acquisitive - understanding" , "avaricious attitude" .)