Bacchanalian party held by female in charge (7)
I believe the answer is:
hedonic
'bacchanalian' is the definition.
(both can mean pleasure-seeking)
'party held by female in charge' is the wordplay.
'party' becomes 'do' (do is a kind of party).
'held by' is an insertion indicator.
'female' becomes 'hen' (female chicken).
'in charge' becomes 'ic' (abbreviation for 'in charge').
'do' put into 'hen' is 'hedon'.
'hedon'+'ic'='HEDONIC'
(Other definitions for hedonic that I've seen before include "out for self-gratification" , "Pleasure-seeking" , "devoted to pleasure" .)