Answer: nailbiter

AnswerCrossword Clue
NAILBITERAnxious one, perhaps
NAILBITERClose game
NAILBITERClose contest
NAILBITERTension-filled sports contest
NAILBITERVery close game, e.g.
NAILBITERTense situation
NAILBITERSudden-death game, say
NAILBITERBlowout's opposite
nailbitersomeone who bites his or her nails