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Definitions

IOU

NOUN
promissory note
Synonyms


I.O.U.
NOUN
debenture
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Essentially, you borrow from the account and create an IOU to yourself.

From MarketWatch • Jan. 14, 2026

Credit is the promise to pay money, an IOU.

From The Wall Street Journal • Dec. 12, 2025

If the IOU isn’t redeemed in good time, the players have a problem.

From The Wall Street Journal • Nov. 6, 2025

A bond is essentially an IOU - in return for an investor buying the bond and lending money, governments pay interest.

From BBC • Apr. 18, 2025

There were harvest expenses staring me in the face, along with trying to finish repaying Uncle Chester’s IOU.

From "Hattie Big Sky" by Kirby Larson