Answer: blamer

AnswerCrossword Clue
BLAMERPointer, perhaps
BLAMERFinger-pointer
BLAMEROne finding fault
BLAMEROne who points a finger
BLAMERFaultfinder.
BLAMERMame's critic
BLAMERFaultfinder
BLAMERPlaintiff, e.g.
BLAMEROne who censures
blamerone that blames (to find fault with)