Economist hits out over money (5)
I believe the answer is:
smith
'economist' is the definition.
(18th-century economist Adam Smith)
'hits out over money' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'over' is an insertion indicator.
'money' becomes 'm' (abbreviation used in economics).
'hits' with letters rearranged gives 'sith'.
'sith' going around 'm' is 'SMITH'.
(Other definitions for smith that I've seen before include "Bessie - - , blues singer" , "Commonest name" , "Common family name" , "See 14" , "Black . . . . . or gun . . . . ." .)