'gatecrash' originates from the combination of 'gate' and 'crash', where 'gate' refers to an entrance and 'crash' means to enter forcefully or without permission.

'gatecrash' evolved from the practice of crashing through gates to enter events without permission, eventually becoming a colloquial term for attending events uninvited.

Initially, it meant 'to forcefully enter through a gate', but over time it evolved into its current meaning of attending events without an invitation.