| Protozoan propellers | 20 |
| Protozoan | 9 |
| Protozoa: Var. | 14 |
| Protozoa with pseudopodia (var.) | 32 |
| Protozoa with pseudopodia | 25 |
| Protozoa propellers, perhaps | 28 |
| Protozoa genus | 14 |
| Protozoa | 8 |
| Prototypical victim | 19 |
| Prototypical small town | 23 |
| Prototypical pooch | 18 |
| Prototypical laundry challenges | 31 |
| Prototypical frenemy? | 21 |
| Prototypical film | 17 |
| Prototypical address | 20 |
| Prototype, for short | 20 |
| Prototype version | 17 |
| Prototype vehicle | 17 |
| Prototype shows | 15 |
| Prototype flying auto of 1949 | 29 |
| Prototype detail, briefly | 25 |
| Prototype circuit device | 24 |
| Prototype (abbr.) | 17 |
| Prototype | 9 |
| Protoplasmic units | 18 |
| Protoplasmic mass that's neither fungus nor animal | 54 |
| Protons' places | 19 |
| Proton-enhanced opportunist? | 28 |
| Proton-enhanced instrument of torture? | 38 |
| Proton-enhanced form of reproduction? | 37 |
| Proton-enhanced cure-all? | 25 |
| Proton's spot | 17 |
| Proton's place | 18 |
| Proton spot | 11 |
| Proton sites | 12 |
| Proton part | 11 |
| Proton or electron, take your pick | 34 |
| Proton or electron | 18 |
| Proton feature? Favorable use of plastic? Whatever! I'm a PC | 64 |
| Proton donor | 12 |
| Proton counts: Abbr. | 20 |
| Proton carriers | 15 |
| Protomatter of the universe | 27 |
| Protocols | 9 |
| Protocol | 8 |
| Proto-___-European (early language) | 35 |
| Proto-seed | 10 |
| Proto-matter from which the universe was made | 45 |
| Proto-helicopter designer | 25 |
| Proto-baby | 10 |
| Proto- finish | 13 |
| Proto suffix | 12 |
| Proto finish? | 13 |
| Proto finish | 12 |
| Protium and tritium, e.g. | 25 |
| Prothalamion, e.g. | 18 |
| Proteus, e.g. | 13 |
| Proteus's domain, with "the" | 42 |
| Proteus's domain | 20 |
| Proteus and Valentine, for two noted examples | 45 |
| Proteus and Valentine, e.g. | 27 |
| Proteus and Nereus, e.g. | 24 |
| Proteus and Nereus | 18 |
| Protests that go nowhere? | 25 |
| Protests noisily | 16 |
| Protests in Tahrir Square were a part of it | 43 |
| Protests in a way | 17 |
| Protests in a campus dining hall, perhaps | 41 |
| Protests gone awry | 18 |
| Protests | 8 |
| Protestors' shout | 21 |
| Protestors' deprivations | 28 |
| Protestor's replacement | 27 |
| Protestor's hang-up? | 24 |
| Protestor's handout | 23 |
| Protesting, perhaps | 19 |
| Protesting, but not pro-testing? | 32 |
| Protesting the pro-testers? | 27 |
| Protesting testing | 18 |
| Protesters, sometimes | 21 |
| Protesters, for short | 21 |
| Protesters, at times | 20 |
| Protesters' sound | 21 |
| Protesters' shouts | 22 |
| Protesters' cries, often | 28 |
| Protesters' cries | 21 |
| Protesters' chorus | 22 |
| Protesters' ammo | 20 |
| ProtesterÂ's device | 27 |
| Protester's tool, maybe | 27 |
| Protester's tactic | 22 |
| Protester's sign word | 25 |
| Protester's ploy | 20 |
| Protester's medium | 22 |
| Protester on horseback | 22 |
| Protester | 9 |
| Protested noisily | 17 |
| Protested like a Pomeranian | 27 |
| Protested grp. of the 60's | 30 |
| Protested from the stands | 25 |