Disagreement in road after dance (7)
I believe the answer is:
discord
'disagreement' is the definition.
(I know that discord is a type of disagreement)
'road after dance' is the wordplay.
'road' becomes 'rd' (abbreviation).
'after' means one lot of letters go next to another.
'dance' becomes 'disco' (disco can mean a dance event).
'rd' after 'disco' is 'DISCORD'.
'in' acts as a link.
(Other definitions for discord that I've seen before include "contention" , "Disagreement" , "Dissension" , "Strife, lack of harmony" , "cacophony" .)