blow to progress (7)
I believe the answer is:
setback
(Other definitions for setback that I've seen before include "Problem" , "disappointment" , "Snag" , "Hindrance to progress" , "unfortunate event" .)
I believe the answer is:
setback
(Other definitions for setback that I've seen before include "Problem" , "disappointment" , "Snag" , "Hindrance to progress" , "unfortunate event" .)