Turning over place, one wicked party! (4,2,2)
I believe the answer is:
live it up
'party' is the definition.
(I've seen this in another clue)
'turning over place one wicked' is the wordplay.
'turning over' says the letters should be written in reverse.
'place' becomes 'put' (synonyms).
'one' becomes 'i' (Roman numeral).
'wicked' becomes 'evil' (synonyms).
'put'+'i'+'evil'='putievil'
'putievil' in reverse letter order is 'LIVE IT UP'.
(Other definitions for live it up that I've seen before include "Enjoy oneself" , "Go on a spree" , "paint the town red" .)