Definition of IOU in English:

IOU

Line breaks: IOU
Pronunciation: /ʌɪəʊˈjuː
 
/

noun

A signed document acknowledging a debt: ‘Will you take an IOU?’

Origin

late 18th century: representing the pronunciation of I owe you.

Definition of IOU in:

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Word of the day apposite
Pronunciation: ˈapəzɪt
adjective
apt in the circumstances or relation to something