Trim completed frame (3,2)
I believe the answer is:
fit up
'frame' is the definition.
(I've seen this before)
'trim completed' is the wordplay.
'trim' becomes 'fit' (synonyms).
'completed' becomes 'up' (up can mean completed or finished).
'fit'+'up'='FIT-UP'
(Other definitions for fit up that I've seen before include "temporary stage" , "Equip - frame" , "Incriminate (someone) on a false charge (slang)" .)