Answer: rottenapple

AnswerCrossword Clue
ROTTENAPPLESpoiler in the bunch
ROTTENAPPLEOne may spoil the whole bunch
ROTTENAPPLEBad influence
ROTTENAPPLEComputer problem?
ROTTENAPPLEIt could be full of worms
ROTTENAPPLESpoiler of the whole bunch