Answer: cannedlaughter

AnswerCrossword Clue
CANNEDLAUGHTERSitcom booster
CANNEDLAUGHTERSitcom feature
CANNEDLAUGHTERSitcom effect
CANNEDLAUGHTERSitcom sound effect
CANNEDLAUGHTERFrequent sitcom accompaniment
CANNEDLAUGHTERBackground noise on many a sitcom