gatecrash

/ˈɡeɪtˌkræʃ/
verb
  1. To attend a private party, event, or gathering without an invitation or without paying.
    • They decided to gatecrash the company picnic because they heard there would be free food.
    • The celebrity tried to gatecrash the awards after-party but was turned away.
    • If you gatecrash a private event, you might be asked to leave politely.
Antonyms
What does "gatecrash" mean? | whatsthatwordmean | whatsthatwordmean