| 100% | IOU | 3 | Letters that mean "I'll pay later" |
| 68% | IOU | 3 | Letters that mean "we'll settle up later" |
| 63% | IKR | 3 | The three letters that mean I know right |
| 54% | IOU | 3 | "Let me pay you back later" letters |
| 51% | SOS | 3 | Letters that mean "Mayday!" |
| 51% | SOS | 3 | Letters that mean "Help!" |
| 51% | AKA | 3 | Letters that mean "alias" |
| 51% | SOS | 3 | Letters that mean "Emergency!" |
| 51% | ASAP | 4 | Letters that mean "quickly!" |
| 51% | INC | 3 | Letters that mean business |
| 50% | ASAP | 4 | Letters that mean "Right away!" |
| 50% | SOS | 3 | Letters that mean "Help us!" |
| 49% | XOXO | 4 | Letters that mean "hugs and kisses" |
| 49% | ASAP | 4 | Letters that mean "Don't dawdle!" |
| 49% | ATM | 3 | Letters that mean automated teller machine |
| 49% | XYZ | 3 | Letters that mean "examine your zipper" |
| 48% | TMI | 3 | Letters that mean "Stop talking about that!" |
| 48% | DEU | 3 | Three letters that mean "Germany" |
| 47% | OED | 3 | Letters that I had to look up in what turned out to be itself, in order to find out what they meant |
| 47% | BBL | 3 | Internet slang that means be back later |
| 47% | ASAP | 4 | Office memo letters that mean immediately: Abbr. |
| 47% | CSO | 3 | Three letters that mean chief strategy officer |
| 47% | PVP | 3 | Three letters that mean player versus player |
| 47% | CAS | 3 | Three letters that mean close air support |
| 47% | HCF | 3 | Three letters that mean highest common factor |
| 47% | MEV | 3 | Three letters that mean medical evacuation vehicle |
| 46% | IOTA | 4 | Greek letter that means "extremely small amount" |
| 46% | RSA | 3 | Three letters that mean Republic of South Africa |
| 46% | IOTA | 4 | Greek letter that means "tiny amount" in English |
| 46% | IOU | 3 | "Will pay later" letters |