Entertainer in revolt quits dancing (13)
I believe the answer is:
ventriloquist
'entertainer' is the definition.
(ventriloquist is a kind of entertainer)
'in revolt quits dancing' is the wordplay.
'dancing' is an anagram indicator.
'in'+'revolt'+'quits'='inrevoltquits'
'inrevoltquits' with letters rearranged gives 'VENTRILOQUIST'.
(Other definitions for ventriloquist that I've seen before include "Voice-thrower" , "Dummy operator" , "Performer with dummy" .)