Resist young man (4)
I believe the answer is:
buck
I believe this clue is a double definition.
'resist' is the first definition.
(thesaurus)
'young man' is the second definition.
(thesaurus)
(Other definitions for buck that I've seen before include "American's ready" , "Antelope - dollar" , "Male deer; (pass the) responsibility" , "Dandy" , "impetuous youth" .)