Deter through argument or advice (8)
I believe the answer is:
dissuade
(Other definitions for dissuade that I've seen before include "Discourage from course of action" , "Advise not to proceed" , "Put off" , "Deter by advice" , "Try to deter" .)
I believe the answer is:
dissuade
(Other definitions for dissuade that I've seen before include "Discourage from course of action" , "Advise not to proceed" , "Put off" , "Deter by advice" , "Try to deter" .)