Foolishly class them as unequalled (9)
I believe the answer is:
matchless
'unequalled' is the definition.
(I've seen this before)
'foolishly class them' is the wordplay.
'foolishly' indicates anagramming the letters.
'class'+'them'='classthem'
'classthem' is an anagram of 'MATCHLESS'.
'as' acts as a link.
(Other definitions for matchless that I've seen before include "Incomparable" , "Without peer, nonpariel" , "Unparalleled" , "Unique" , "Unrivalled" .)