| 100% | ALFA | 4 | A, in code |
| 93% | DOTDASH | 7 | A, in Morse code |
| 83% | LAWS | 4 | Items in a code |
| 83% | CIPHER | 6 | Message in a code |
| 83% | DAH | 3 | T, in a code |
| 82% | TAP | 3 | Send a message in Morse code, say |
| 82% | ZIP | 3 | ___ code (number in a mailing address) |
| 81% | ELSE | 4 | Word in a coding statement |
| 81% | TAP | 3 | Send a message in Morse code, e.g. |
| 81% | INT | 3 | Number without a decimal point, in computer code |
| 81% | DASH | 4 | Symbol for a longer sound in Morse code |
| 80% | ZIP | 3 | ___ code (number in a US mailing address) |
| 80% | FIRERESISTANT | 13 | *Meeting building code, in a way |
| 79% | DIT | 3 | How a dot may be vocalized in Morse code |
| 79% | NINE | 4 | First digit in a California ZIP code |
| 78% | SOS | 3 | Signal that's a palindrome in English and Morse code |
| 78% | DEBUG | 5 | Track down a stray semicolon in one’s code, perhaps |
| 77% | AREA | 4 | ___ code (first three digits in a US phone number) |
| 77% | ASCII | 5 | American code system for text in a computer |
| 77% | ERNURSE | 7 | One rushing to a Code Blue, in brief |
| 76% | ZIP | 3 | ___ code (what follows the state in a US postal address) |
| 76% | TWO | 3 | First and last digit in a Manhattan area code |
| 75% | ALPHA | 5 | Code word for A in radio communications |
| 75% | ERRORS | 6 | Mistakes in a computer code |
| 75% | ONE | 3 | Digit in a binary code |
| 74% | AREA | 4 | Zip code is given to a specific ___ in the city |
| 74% | ITOO | 4 | License-to-kill indicator in a spy's code name |
| 73% | NSA | 3 | Code-breaking org. that interviewed Will for a job in "Good Will Hunting" |
| 73% | LOCHNESS | 8 | Body of water searched in a 1987 project code-named Deepscan |
| 71% | AREA | 4 | ___ code (three digits that begin a phone number in the US or Canada) |