- a written acknowledgment of a debt, especially an informal one consisting only of the letters IOU, the sum owed, and the debtor's signature.
Origin of IOU
First recorded in 1610–20; representing I owe you
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for iou
She is the author of the bestsellers The Silent Takeover and IOU: The Debt Threat .The New Co-op Capitalism
February 23, 2009
It answers to the Welsh au or iau, and the Breton ou or iou.A Handbook of the Cornish Language
This way he had more to eat or to sell for IOU's to collect later.The Biography of a Rabbit
The evening previous he had lost a thousand dollars, for which he had given his IOU.Jack's Ward
Horatio Alger, Jr.
- a written promise or reminder to pay a debt
C17: representing I owe you
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.