Virtuoso using echo wrongly (6)
I believe the answer is:
genius
'virtuoso' is the definition.
(synonyms)
'using echo wrongly' is the wordplay.
'echo' becomes 'e' (phonetic alphabet: alpha, bravo, charlie etc.).
'wrongly' indicates an anagram.
'using'+'e'='usinge'
'usinge' with letters rearranged gives 'GENIUS'.
(Other definitions for genius that I've seen before include "Person with exceptional abitity" , "Exceptional talent" , "no dope" , "One has an extraordinary talent" , "Person with exceptional creative ability" .)