Somewhat unkind, offensively somewhat (4,2)
I believe the answer is:
kind of
'somewhat' is the definition.
(I've seen this in another clue)
'somewhat unkind offensively' is the wordplay.
'somewhat' indicates a hidden word.
'KIND OF' is hidden within 'unkind offensively'.
(Other definitions for kind of that I've seen before include "After a fashion" , "Rather" , "Not exactly" , "Somewhat" .)