To make someone acquainted or familiar with something before the main event or meeting.
Combines 'fore-' (before) with 'acquaint' (from Old French 'acointer,' to make known). It means introducing or informing someone in advance.
In formal society, people would 'foreacquaint' guests with complicated rules of etiquette so nobody would be embarrassed—the original concept of a 'briefing' or 'heads-up.'
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