Dancer leave twice? (4)
I believe the answer is:
gogo
'dancer' is the definition.
(I know this)
'leave twice?' is the wordplay.
'leave' becomes 'go' (to go is to depart or leave).
'twice?' shows that letters should be duplicated (I've seen 'twice' mean this).
'go' doubled is 'GOGO'.
(Other definitions for gogo that I've seen before include "Assertively dynamic" , "Energetic" , "__________ dancer, exotic performer" , "- - dancer (disco)" , "Kind of erotic dancing" .)