An archaic spelling of 'account,' referring to a record of money, transactions, or a narrative explanation.
From Old French accompte, variant of account. This spelling preserves the French 'mp' cluster that was later simplified to just 'c' in modern English 'account'.
Medieval accountants actually wrote 'accompt' on their ledgers, and the spelling stuck around for centuries in business English—you can find it in colonial documents and even Shakespeare's time.
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