Peer with noble qualities? Not entirely (5)
I believe the answer is:
equal
'peer' is the definition.
(I know that peer can be written as equal)
'with noble qualities? not entirely' is the wordplay.
'not entirely' indicates the answer is hidden within the clue.
'EQUAL' is hidden within 'with noble qualities'.
(Other definitions for equal that I've seen before include "The same; fairly balanced" , "Evenly matched" , "Alike" , "Identical, add up to" , "Be as good as, match" .)