18 across
Made
clear:
hero
moved
improperly
(5,4)
Made clear: hero moved improperly (5,4)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
Look at Made clear — that's your definition, as in driving a point home. Then "improperly" signals an anagram, and sure enough the letters of hero moved can be rearranged to give you the answer.