Salesman to begrudge exhibit (9)
I believe the answer is:
represent
'exhibit' is the definition.
(thesaurus)
'salesman to begrudge' is the wordplay.
'salesman' becomes 'rep' (I've seen this before).
'to begrudge' becomes 'resent' ('resent' can be a synonym of 'begrudge').
'rep'+'resent'='REPRESENT'
(Other definitions for represent that I've seen before include "show" , "Portray" , "Ambassadors do it" , "Picture" , "Play the part" .)