| 100% | UTE | 3 | 4 x 4, for short |
| 71% | DMS | 3 | X exchanges, for short |
| 71% | DMS | 3 | X missives, for short |
| 70% | UKE | 3 | 4 stringed instrument, for short |
| 69% | ANON | 4 | Mr. X, for short |
| 67% | GEN | 3 | X or Z, for short |
| 66% | VPS | 3 | 4-Down and others, for short |
| 66% | DRS | 3 | Some 4-Down characters, for short |
| 66% | MAC | 3 | Computer running OS X, for short |
| 66% | DMS | 3 | Contacts privately on X, for short |
| 66% | BOT | 3 | Non-human X user, for short |
| 65% | PREK | 4 | School for 4-year-olds, for short |
| 65% | ALG | 3 | Math class with x's, for short |
| 65% | ALG | 3 | Math subject with x's, for short |
| 64% | BDAY | 4 | Maya Angelou's is April 4, for short |
| 64% | GPA | 3 | 4.0 is a great one, for short |
| 64% | ETS | 3 | Some characters in "The X Files," for short |
| 64% | IDNO | 4 | 4-Across, e.g., for short (2 wds.) |
| 64% | SLC | 3 | Capital of 4-Across, for short |
| 64% | ETS | 3 | "The X-Files" topics, for short |
| 64% | UFOS | 4 | "The X-Files" sightings, for short |
| 64% | SETI | 4 | "The X-Files" program, for short |
| 64% | ETS | 3 | "The X-Files" extras, for short |
| 64% | ETS | 3 | "The X-Files" characters, for short |
| 64% | SETI | 4 | "The X-Files" project, for short |
| 64% | UFO | 3 | "The X-Files" saucer, for short |
| 64% | ALG | 3 | "Find x" math subject, for short |
| 63% | GPAS | 4 | Figures that max out at 4.0, for short |
| 63% | ONED | 4 | Band that formed on The X Factor, for short |
| 63% | ALG | 3 | "Solve for x" math subject, for short |