ALL meanings of iou
IOU
I i - noun iou promissory note 1
- noun iou An informal written note promising to pay the stated sum. 0
- countable noun iou An IOU is a written promise that you will pay back some money that you have borrowed. IOU is an abbreviation for 'I owe you'. 0
- noun iou a written promise or reminder to pay a debt 0
- noun iou an informally written, signed acknowledgment of a specified debt, characteristically bearing the letters IOU 0