Passed with flying colors (4)
I believe the answer is:
aced
'passed with flying colors' is the definition.
('ace' can be a synonym of 'pass with flying colors')
This is the entire clue.
(Other definitions for aced that I've seen before include "passed with highest marks in US" , "Sailed through" , "Reached a golf hole in one shot" , "Comprehensively beaten" , "got a hole in one" .)