gate-crasher

[ geyt-krash-er ]
/ ˈgeɪtˌkræʃ ər /
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noun Informal.

a person who attends or enters a social function without an invitation, a theater without a ticket, etc.

Origin of gate-crasher

An Americanism dating back to 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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