Make money out of clear nonsense! (4)
I believe the answer is:
earn
'make money' is the definition.
(to earn is to make money)
'of clear nonsense' is the wordplay.
'of' says the answer is hidden in the clue.
'EARN' is hidden in the letters of 'clear nonsense'.
'out' is the link.
(Other definitions for earn that I've seen before include "Near (anag.)" , "Gain by work or merit" , "Merit through work or endeavour" , "Receive in return for" , "and 3: Work for bed and board" .)