Dance not made up, reportedly (4)
I believe the answer is:
reel
'dance' is the definition.
(I know that reel is a type of square dance)
'not made up reportedly' is the wordplay.
'not made up' becomes 'real' (I've seen this in another clue).
'reportedly' shows a homophone (sound like).
'real' is a homophone of 'REEL'.
(Other definitions for reel that I've seen before include "Cylinder on which something is wound" , "Dance - sway - cotton holder" , "Highland dance" , "spin" , "Drum - dance - music" .)