Make a profit and brighten up (5)
I believe the answer is:
clear
I believe this clue is a triple definition!
'make' is the first definition.
(I know that make can be written as clear)
'a profit' is the second definition.
(thesaurus)
'and' is a link.
'brighten up' is the third definition.
(I've seen this in another clue)
(Other definitions for clear that I've seen before include "Fine" , "Unimpeded" , "Leap over" , "Bold" , "Transparent or cloudless" .)