Altogether done with a vacuous liberal (7)
I believe the answer is:
overall
'altogether' is the definition.
(I've seen this before)
'done with a vacuous liberal' is the wordplay.
'done with' becomes 'over' (similar in meaning as in 'over and done with').
'vacuous' suggests removing the centre.
'liberal' with its middle removed is 'll'.
'over'+'a'+'ll'='OVERALL'
(Other definitions for overall that I've seen before include "Protective cover for worker" , "All over in general way" , "Taking everything into account" , "On the whole - protective garment" , "Workman's garment worn to protect other clothing (7)" .)