Answer: gatecrasher

AnswerCrossword Clue
GATECRASHERClumsy partygoer?
GATECRASHERClumsy passenger in the airport boarding area?
GATECRASHERUnwelcome guest
GATECRASHERUninvited one
GATECRASHERUninvited guest
gatecrasherGATECRASH, to attend a social event uninvited