Even cigar - dreadfully wrong (9)
I believe the answer is:
grievance
'wrong' is the definition.
(thesaurus)
'even cigar dreadfully' is the wordplay.
'dreadfully' indicates an anagram (a dreadful spelling).
'even'+'cigar'='evencigar'
'evencigar' anagrammed gives 'GRIEVANCE'.
(Other definitions for grievance that I've seen before include "Bad feeling" , "Item causing resentment" , "Complaint" , "beef" , "gripe" .)