| 100% | ALGEBRA | 7 | Something with an "x" factor? |
| 74% | ALGEBRA | 7 | Subject with an "x" factor? |
| 64% | TESLA | 5 | Company with an X |
| 63% | RATED | 5 | Marked with an X, maybe |
| 62% | SLIT | 4 | Cut with an X-Acto knife |
| 62% | ERROR | 5 | It's marked with an X |
| 62% | LESSONTEN | 9 | Primer section marked with an X |
| 61% | DDS | 3 | Professional with an x-ray machine: Abbr. |
| 61% | ERROR | 5 | It may be marked with an X |
| 60% | GRAPH | 5 | Diagram with an x- and y-axis, usually |
| 60% | TICTACTOETACTIC | 15 | Starting with an X in the corner, say? |
| 60% | GRAPH | 5 | Something with x and y axes |
| 59% | TREASURE | 8 | __ Island, tale of buried booty marked with an X |
| 59% | BMW | 3 | Mercedes rival with an X and Z series: Abbr. |
| 59% | XENON | 5 | Only chemical element whose name starts with an x |
| 59% | WOLVERINE | 9 | An X-Men superhero with retractable claws |
| 58% | BURIED | 6 | __ treasure, it's marked with an X on a map |
| 56% | REST | 4 | Stick with an X-shaped head used to support a snooker cue |
| 53% | ASHANTI | 7 | R. & B. singer with an uncredited appearance in “Malcolm X” |
| 52% | SEX | 3 | Driver's license field filled with an M, F or X |
| 51% | VIDEO | 5 | With 8-Across, something played by an e-sports competitor |
| 50% | MISTAKE | 7 | It may be marked with an "X" |
| 50% | XENON | 5 | Only element that starts with an "X" |
| 49% | MAP | 3 | Pirate's document with an "X" on it |
| 48% | MARIO | 5 | ___ Lopez, "Saved by the Bell" actor who co-hosted "The X Factor" with Khloe Kardashian |
| 48% | EGG | 3 | Something a person with an ovomucoid allergy cannot eat |
| 47% | WRONG | 5 | Like a test answer with an "x" next to it |
| 46% | SNEEZE | 6 | Something that's impossible to do with one's eyes open, per an urban legend |
| 46% | SEX | 3 | X factor? |
| 46% | TEN | 3 | X factor? |