| 100% | IOU | 3 | Promise to repay, for short |
| 75% | IOU | 3 | Promise to pay, for short |
| 66% | IOU | 3 | Poker player's promise to pay, for short |
| 65% | AHCA | 4 | Bill that promises to overhaul the medical system, for short |
| 62% | NDA | 3 | Promise not to tell, for short |
| 61% | XXXX | 4 | Promises to repay |
| 58% | IOU | 3 | Written promise to repay |
| 57% | IOUS | 4 | Notes promising to repay loans |
| 56% | IOU | 3 | Note promising to repay a debt |
| 55% | IOU | 3 | Letters signifying a promise to repay a debt |
| 54% | IOU | 3 | Letters on a note promising to repay a debt |
| 52% | TIL | 3 | Up to, for short |
| 52% | DIDNT | 5 | Neglected to, for short |
| 51% | IOU | 3 | Promise of payment, for short |
| 51% | IOU | 3 | Promise of repayment, for short |
| 50% | NAN | 3 | Short for grandmother (common to Brits) |
| 49% | ERRAND | 6 | Short trip to the store, for example |
| 49% | CDS | 3 | Successors to LPs, for short |
| 49% | OKS | 3 | Says yes to, for short? |
| 49% | ASPCA | 5 | Friend to Fido, for short |
| 49% | MIA | 3 | One to remember, for short |
| 49% | POW | 3 | One to remember, for short |
| 49% | KAL | 3 | Carrier to Seoul, for short |
| 49% | ETS | 3 | Visitors to Earth, for short |
| 49% | JAL | 3 | Carrier to Tokyo, for short |
| 49% | XING | 4 | Place to walk, for short |
| 49% | AMEX | 4 | Alternative to Visa, for short |
| 49% | APBS | 4 | Alerts to cruisers, for short |
| 49% | LAV | 3 | Place to go, for short |
| 49% | SIS | 3 | Kim to Khloe, for short |