Evaluate again (8)
I believe the answer is:
reassess
'evaluate again' is the definition.
('assess' can be a synonym for 'evaluate' so perhaps 'reassess' is OK for 'evaluate again')
This is the entire clue.
(Other definitions for reassess that I've seen before include "Revise judgment" , "Make another appraisal" , "Re-evaluate" , "reconsider" , "think again" .)