Stop dead in this wintry weather? (6)
I believe the answer is:
freeze
I believe this is a double definition.
'stop dead' is the first definition.
(synonyms)
'this wintry weather?' is the second definition.
(thesaurus)
'in' is the link.
(Other definitions for freeze that I've seen before include "period of cold weather" , "Solidify due to decrease in temperature" , "Stand motionless" , "Turn to ice" , "Become icy" .)