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Synonyms

IOU

American  
Or I.O.U.

  1. a written acknowledgment of a debt, especially an informal one consisting only of the letters IOU, the sum owed, and the debtor's signature.

IOU British  

noun

  1. a written promise or reminder to pay a debt

"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
IOU Cultural  

  1. Abbreviation for “I owe you.” An IOU is a written statement of a borrower's obligation to pay a debt.

Etymology

Origin of IOU

First recorded in 1610–20; representing I owe you

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.