IOU
noun
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
2
: debt, obligation
Examples of IOU in a Sentence
I don't have any cash, so I'll have to give you an IOU.
Word History
Etymology
from the pronunciation of I owe you
First Known Use
1795, in the meaning defined at sense 1
Dictionary Entries Near IOU
Cite this Entry
“IOU.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/IOU. Accessed 9 Dec. 2023.
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Kids Definition
IOU
noun
: a paper that has on it the letters IOU, a stated sum, and a signature and that is given to acknowledge a debt
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