More polite with salesman (3)
I believe the answer is:
rep
'salesman' is the definition.
(sales representative)
'more polite with' is the wordplay.
'with' indicates a hidden word.
'REP' can be found hidden inside 'more polite'.
(Other definitions for rep that I've seen before include "agent" , "Repertory theatre" , "Theatre; fabric; salesman" , "Travelling salesman" , "what a draper usually sells" .)