IOU Definition In English

• 0 abbreviation for I owe you: a written promise to pay back a debt:

  • Here's an IOU for the fiver you lent me. I'll pay you back on Monday.

• 1 abbreviation for I owe you (= a written promise to pay back money owed):

  • I’ll give you an IOU for the loan.

• 2 abbreviation for I owe you: a written promise to pay back a debt:

  • The New York agent now has an IOU for $1,000.