Angry, smart about lost role (8)
I believe the answer is:
choleric
'angry' is the definition.
(similar in meaning)
'smart about lost role' is the wordplay.
'smart' becomes 'chic' (both can mean stylish).
'about' indicates putting letters inside.
'lost' is an anagram indicator.
'role' anagrammed gives 'oler'.
'chic' enclosing 'oler' is 'CHOLERIC'.
(Other definitions for choleric that I've seen before include "Hot-tempered" , "Annoyed" , "Irascible" , "Ill-tempered" , "Easily angered - cliche or what?" .)