Disreputable paper (3)
I believe the answer is:
rag
'disreputable paper' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rag that I've seen before include "Bit of cloth" , "Cheap newspaper" , "Tattered cloth or university romp" , "This trade is the clothing business" , "Piece of old cloth" .)