Answer: stowaway

AnswerCrossword Clue
STOWAWAYCertain free rider
stowawayA person who stows away
stowawaya person who hides away to get free passage
STOWAWAYNautical nuisance
STOWAWAYOne who gets a free ride
STOWAWAYOne who goes free?
STOWAWAYGroucho, in "Monkey Business"
STOWAWAYFree rider
STOWAWAY'Slug off?
STOWAWAYHe hides when he rides
STOWAWAYTraveling freeloader
STOWAWAYSeagoing freeloader
STOWAWAYUneasy traveler
STOWAWAYCertain passenger
STOWAWAYAirline nuisance
STOWAWAYNautical freeloader
STOWAWAYShipboard hider
STOWAWAYNon-paying passenger
STOWAWAYUnexpected passenger
STOWAWAYHide in a hold
STOWAWAYIllegal passenger
STOWAWAYCertain freeloader