gatecrash /ˈɡeɪtkɹaʃ/noun 2verb 1forms 3 noun2 •An instance of gatecrashing a party, event, etc. •Part of a traditional Chinese wedding ceremony in which the groom and his groomsmen complete several difficult or embarrassing tasks prepared by the bridesmaids to prove his love for the bride.During the 30-minute gatecrash, Mr Lee and his groomsmen did challenges such as forming a human pyramid and dancing to pop tunes such as Britney Spears' Toxic. — 2016 verb1 •To attend a social event without having been invited, or without having paid.“[…] I mean, she doesn’t belong to the Society—“ ”What Society?” ”The Society that was meeting. I think she pushed in for a joke.” ”Gate-crashed you? […]” — 1935 formsgatecrashed · gatecrashing · gatecrashes