Trump revealed hairstyle (5)
I believe the answer is:
outdo
'trump' is the definition.
(synonyms)
'revealed hairstyle' is the wordplay.
'revealed' becomes 'out' (I've seen this in other clues).
'hairstyle' becomes 'do' (a hairdo).
'out'+'do'='OUTDO'
(Other definitions for outdo that I've seen before include "Surpass someone at something" , "Be better in performance (than another person)" , "Perform better than surpass" , "Perform better than (someone)" , "Beat" .)