Form of entertainment that's loud and dishonest (7)
I believe the answer is:
funfair
'form of entertainment' is the definition.
'loud and dishonest' is the wordplay.
'loud' becomes 'f' (A musical term).
'and' is a charade indicator (letters next to each other).
'dishonest' becomes 'unfair' (I've seen this before).
'f'+'unfair'='FUNFAIR'
'that's' acts as a link.
(Other definitions for funfair that I've seen before include "entertainment for the family?" , "Amusements here" , "Amusement park" , "place of amusement" , "Swings and roundabouts" .)