How overweight associate came to his end? (7)
I believe the answer is:
fatally
'came to his end?' is the definition.
The definition suggests a singular noun but the answer is not.
'how overweight associate' is the wordplay.
'how overweight' becomes 'fat' (similar in meaning. I am not sure about the 'how' bit.).
'associate' becomes 'ally' (ally is a kind of associate).
'fat'+'ally'='FATALLY'
Can you help me to learn more?
(Other definitions for fatally that I've seen before include "So as to cause death" , "Might one be wounded thus" , "with no hope of revival" , "producing disastrous result" , "Mortally" .)