Answer:

cheater

Answer	Crossword Clue
CHEATER	Sharp or trickster
CHEATER	Crib user
CHEATER	Proctor's concern

CHEATER	Cribnote preparer
CHEATER	One using cribnotes
CHEATER	Scam artist
CHEATER	Fraud
CHEATER	He might look over your test
CHEATER	One with a crib sheet
CHEATER	Card sharp.
CHEATER	Untrustworthy one

CHEATER	Impostor
CHEATER	Con man
CHEATER	Crook
CHEATER	One peeking at answers on a test
CHEATER	One using a crib
CHEATER	Test taker going "Psst!," say
CHEATER	Sharp