Actor bad at reading (9)
I believe the answer is:
tragedian
'actor' is the definition.
(tragedian is a kind of actor)
'bad at reading' is the wordplay.
'bad' indicates an anagram.
'at'+'reading'='atreading'
'atreading' is an anagram of 'TRAGEDIAN'.
(Other definitions for tragedian that I've seen before include "Egad, I rant about dramatic actor" , "A great din (anag) - actor" , "Serious actor" , "Dramatist" , "Egad, I rant about actor in sad drama" .)