| Xanadu structure | 16 |
| Xanadu river | 12 |
| Xanadu resident | 15 |
| Xanadu owner | 12 |
| Xanadu name | 11 |
| Xanadu inhabitant of cinema | 27 |
| Xanadu builder | 14 |
| Xanadu 2.0, to Bill Gates | 25 |
| Xanadu rock group | 20 |
| Xanadu rock band briefly | 28 |
| Xanadu | 6 |
| X3 and Z4, for two | 18 |
| X3 and Z4 maker | 15 |
| X3 and Z4 | 9 |
| X3 and X5 maker | 15 |
| X-_____ | 7 |
| X-___ movie | 11 |
| X-___ large | 11 |
| X-___ (villains in the video game Paper Mario) | 46 |
| X-___ (large, in commercial names) | 34 |
| X-___ (big, in commercial names) | 32 |
| X-___ | 5 |
| X-__: tool brand | 16 |
| X-X-X part | 10 |
| X-Wing-flying droid | 19 |
| X-Wife song from "Rockin' Rio" | 44 |
| X-shaped warning sign next to railroad tracks | 45 |
| X-shaped crosses | 16 |
| X-shaped cross | 14 |
| X-ray, perhaps | 14 |
| X-ray, for example | 18 |
| X-ray's noisier relative | 28 |
| X-ray's kin | 15 |
| X-ray's cousin | 18 |
| X-ray ___, joke shop offering | 29 |
| X-ray ___ (novelty item) | 24 |
| X-ray ___ (kids' goggles) | 29 |
| X-Ray ___ (gag glasses) | 23 |
| X-ray ___ | 9 |
| X-Ray __: U.K. punk band | 24 |
| X-ray vision thwarter | 21 |
| X-ray vision deterrent | 22 |
| X-ray vision can't penetrate it | 35 |
| X-ray vision blocker | 20 |
| X-ray vision and flight, e.g. | 29 |
| X-ray view | 10 |
| X-ray units | 11 |
| X-ray unit | 10 |
| X-ray type | 10 |
| X-ray technique | 15 |
| X-ray targets | 13 |
| X-ray supplement | 16 |
| X-ray stopper | 13 |
| X-ray specs? | 12 |
| X-ray spec? | 11 |
| X-ray spec | 10 |
| X-ray relative | 14 |
| X-ray particle | 14 |
| X-ray of the hips feature | 25 |
| X-ray measurements | 18 |
| X-ray machine's successor (Abbr.) | 37 |
| X-ray kin | 9 |
| X-ray imaging technique | 23 |
| X-ray for Rex, say | 18 |
| X-ray follow-up, sometimes | 26 |
| X-ray follow-up, perhaps | 24 |
| X-ray follow-up | 15 |
| X-ray examiners: Abbr. | 22 |
| X-ray doses | 11 |
| X-ray dose units | 16 |
| X-ray dose unit | 15 |
| X-ray dose | 10 |
| X-ray dosages | 13 |
| X-ray dosage units | 18 |
| X-ray dosage unit | 17 |
| X-ray discoverer | 16 |
| X-ray devices? | 14 |
| X-ray descendant | 16 |
| X-ray cousin, briefly | 21 |
| X-ray cousin | 12 |
| X-ray blocker | 13 |
| X-ray alternative | 17 |
| X-ray -- (sci-fi glasses) | 25 |
| X-ray | 5 |
| X-rating? | 9 |
| X-rater, once | 13 |
| X-rated, say | 12 |
| X-rated, perhaps | 16 |
| X-rated, maybe | 14 |
| X-rated, for short | 18 |
| X-rated works | 13 |
| X-rated words | 13 |
| X-rated utterances | 18 |
| X-rated stuff | 13 |
| X-rated movies | 14 |
| X-rated material | 16 |
| X-rated Lovelace | 16 |
| X-rated literature | 18 |
| X-rated language | 16 |
| X-rated flick | 13 |