Free of the bride (3)
I believe the answer is:
rid
'free' is the definition.
('rid' can be a synonym of 'free')
'of the bride' is the wordplay.
'of' indicates the answer is hidden within the clue.
'RID' is hidden in the letters of 'bride'.
(Other definitions for rid that I've seen before include "Free, relieve" , "Free from something unpleasant" , "Free (someone of something unwanted)" , "Free, deliver, clear" , "Clear, remove" .)