Go away and eat too much? (3,7)

'too much?' is the definition.
Both the definition and answer are adjectives.
Perhaps you can see a link between them that I can't see?

'go away and eat' is the wordplay.
I cannot quite understand how this works, but
'go' could be 'get' (synonyms) and 'get' is found within the answer.
'eat' could be 'stuff' (stuffing is a kind of eating) and 'stuff' is found in the answer.
The remaining letters 'ed' 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).

Can you help me to learn more?