Simple past tense and past participle of gatecrash.(verb)
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Use "gatecrashed" in a sentence
"So there is no way he 'gatecrashed' - he followed the necessary procedures according to the web site."
"I think it is important to clarify the perception that PZ Meyers 'gatecrashed' the screening that some commentators are making."
"He said in a statement DP Youth members had broken a formal agreement with the university when they "gatecrashed" an event for registered student societies organised by the SRC."