Match with elements of supreme quality (5)
I believe the answer is:
equal
'match' is the definition.
(synonyms)
'elements of supreme quality' is the wordplay.
'elements of' indicates a hidden word (I've seen 'element of' mean this (I've seen this in other clues)).
'EQUAL' is hidden within 'supreme quality'.
'with' acts as a link.
(Other definitions for equal that I've seen before include "On a par" , "Match, rival" , "Uniform" , "Match; evenly balanced" , "Evenly matched" .)