Usurer (4,5)
I believe the answer is:
loan shark
'usurer' is the definition.
(synonyms)
This is all the clue.
(Other definitions for loan shark that I've seen before include "Usurer" , "Unscrupulous moneylender (colloq.)" , "One lends money at excessive rates of interest" , "Money lender" , "Financial dealer" .)