Teased for being unkempt (6)
I believe the answer is:
ragged
I believe this is a double definition.
'teased' is the first definition.
('rag' can be a synonym of 'tease')
'being unkempt' is the second definition.
(I've seen this before)
'for' is the link.
(Other definitions for ragged that I've seen before include "Played practical jokes - in tatters" , "ridiculed" , "Threadbare" , "Shabby" , "Dagger could be tattered" .)