Made out? This genius did badly (13)
I believe the answer is:
distinguished
'made out?' is the definition.
('distinguish' can be a synonym of 'make out')
'this genius did badly' is the wordplay.
'badly' indicates anagramming the letters.
'this'+'genius'+'did'='thisgeniusdid'
'thisgeniusdid' is an anagram of 'DISTINGUISHED'.
(Other definitions for distinguished that I've seen before include "Differentiated; eminent" , "Acclaimed" , "Made out; illustrious" , "Uniquely recognised" , "Made out; noble" .)