Prevent any progress (6)
I believe the answer is:
stymie
(Other definitions for stymie that I've seen before include "Obstruct as on putting green" , "'Hinder, prevent progress (6)'" , "Tricky situation" , "balk" , "Impede, say golf stroke" .)
I believe the answer is:
stymie
(Other definitions for stymie that I've seen before include "Obstruct as on putting green" , "'Hinder, prevent progress (6)'" , "Tricky situation" , "balk" , "Impede, say golf stroke" .)