Dictionary

IOU

noun \ˌī-(ˌ)ō-ˈyü\

: a usually written promise to pay a debt

Full Definition of IOU

1
:  a paper that has on it the letters IOU, a stated sum, and a signature and that is given as an acknowledgment of debt
ADVERTISEMENT

Origin of IOU

from the pronunciation of I owe you
First Known Use: 1795
IOU Defined for Kids

IOU

noun \ˌī-ō-ˈyü\

Definition of IOU for Kids

:  a written promise to pay a debt

Browse

Next Word in the Dictionary: -iousPrevious Word in the Dictionary: iota subscriptAll Words Near: IOU
ADVERTISEMENT
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears