| Period for preparation | 22 |
| Period for Marie Antoinette's doom | 38 |
| Period for historians | 21 |
| Period for diversion | 20 |
| Period fondly remembered now | 28 |
| Period following Stone and Bronze | 33 |
| Period following Rome's fall | 32 |
| Period following homework completion, perhaps | 45 |
| Period extending well into the future | 37 |
| Period ending January 6 | 23 |
| Period ending about 9000 B.C. | 29 |
| Period ender | 12 |
| Period during which freshmen are frequently visited | 51 |
| Period during which Charlemagne lived | 37 |
| Period covered | 14 |
| Period circa 1000 B.C. | 22 |
| Period bookended by extinction events | 37 |
| Period between wars | 19 |
| Period between stimulus and response | 36 |
| Period between Shaban and Shawwal | 33 |
| Period between sessions | 23 |
| Period between certain quarters | 31 |
| Period between cause and effect | 31 |
| Period between blue moons | 25 |
| Period between | 14 |
| Period beginning on Ash Wednesday | 33 |
| Period beginning four Sundays before Christmas | 46 |
| Period beginning Ash Wednesday | 30 |
| Period before the storm | 23 |
| Period before the results come in | 33 |
| Period before the Renaissance | 29 |
| Period before the Quaternary | 28 |
| Period before the Middle Ages | 29 |
| Period before hostilities | 25 |
| Period before Easter | 20 |
| Period before Christmas | 23 |
| Period before après-midi | 27 |
| Period before a war | 19 |
| Period before a Jewish holiday | 30 |
| Period before | 13 |
| Period away | 11 |
| Period at college | 17 |
| Period after sunset | 19 |
| Period after springing forward: Abbr. | 37 |
| Period after soir | 17 |
| Period after Shrove Tuesday | 27 |
| Period after one round too many? | 32 |
| Period after Mardi Gras | 23 |
| Period after Ford's presidency | 34 |
| Period after finishing homework, say | 36 |
| Period after dark, in ads | 25 |
| Period after a sentence | 23 |
| Period after 12 | 15 |
| Period 4/5 as lonely to Garcia Márquez | 41 |
| Period 'twixt 12 and 20 | 27 |
| Period | 6 |
| Perino of Fox | 13 |
| Perineum, slangily | 18 |
| Perimeters | 10 |
| Perimeter: Abbr. | 16 |
| Perimeter parts | 15 |
| Perimeter of a disk: Abbr. | 26 |
| Perimeter guard | 15 |
| Perimeter deterrent | 19 |
| Perimeter defenses | 18 |
| Perimeter contents | 18 |
| Perimeter command | 17 |
| Perimeter | 9 |
| Perils for spelunkers | 21 |
| Perils for polar explorers | 26 |
| Perils at sea | 13 |
| Perils | 6 |
| Perilous wind | 13 |
| Perilous thing to cross over | 28 |
| Perilous seat of government? | 28 |
| Perilous precipitation | 22 |
| Perilous place in sword-and-sorcery tales | 41 |
| Perilous place | 14 |
| Perilous pincushion? | 20 |
| Perilous pick-me-ups? | 21 |
| Perilous performance | 20 |
| Perilous journalistic post | 26 |
| Perilous gamble | 15 |
| Perilous expanse | 16 |
| Perilous drops? | 15 |
| Perilous | 8 |
| Peril of northern waters | 24 |
| Peril for Pavin | 15 |
| Peril for a veterinarian? | 25 |
| Peril at sea | 12 |
| Peril | 5 |
| Perignon's title | 20 |
| Perignon was one | 16 |
| Peridot, e.g. | 13 |
| Peridot or tigereye | 19 |
| Peridot or shade of green | 25 |
| Peridot color | 13 |
| Peridot | 7 |
| Pericope | 8 |
| Pericles, for one | 17 |