gatecrasher
- n someone who gets in (to a party) without an invitation or without paying
- He was suddenly confronted by a prim, grey-haired gatecrasher.
- They had recognized him as Argentina's famed gatecrasher, Jpiter Roberto Perrusi, a onetime $50-a-month postal clerk.
- The butler shook his head at the young gatecrasher: "Very sorry, sir, but your name is not on the list.