Letters from author not glad to have stopped (6,2,1,4)
I believe the answer is:
ground to a halt
'stopped' is the definition.
(I've seen this before)
'letters from author not glad to have' is the wordplay.
'author not glad' anagrams to 'GROUND TO A HALT'.
But, I'm not sure how this is indicated.
Can you help me to learn more?
(Other definitions for ground to a halt that I've seen before include "stuck" , "Slowed down gradually and then stopped" .)