| Principal site? (abbr.) | 23 |
| Principal seaport of Chile | 26 |
| Principal roles | 15 |
| Principal role | 14 |
| Principal river of Armenia | 26 |
| Principal residences | 20 |
| Principal raw material | 22 |
| Principal railroad routes | 25 |
| Principal rail route | 20 |
| Principal principles | 20 |
| Principal principle | 19 |
| Principal Prince Edward Island crop | 36 |
| Principal portrayer in "Grease" | 41 |
| Principal port of Syria | 23 |
| Principal port of Denmark | 25 |
| Principal player in "Grease" | 38 |
| Principal plant? | 16 |
| Principal pipes | 15 |
| Principal pipe | 14 |
| Principal part of a country | 27 |
| Principal part | 14 |
| Principal ore of lead | 21 |
| Principal ore of aluminum | 25 |
| Principal of Chinese philosophy | 31 |
| Principal Norse gods | 20 |
| Principal movie roles | 21 |
| Principal McGee's portrayer in "Grease" | 53 |
| Principal McGee portrayer in the "Grease" films | 57 |
| Principal McGee portrayer in "Grease" | 47 |
| Principal mass of a tooth | 25 |
| Principal location?: Abbr. | 26 |
| Principal island of the U.K. | 28 |
| Principal in a will | 19 |
| Principal in a well-publicized breakup | 38 |
| Principal in a financial firm | 29 |
| Principal highway | 17 |
| Principal gp. | 13 |
| Principal goal | 14 |
| Principal force | 15 |
| Principal field of study | 24 |
| Principal element | 17 |
| Principal dish of a meal | 24 |
| Principal dish | 14 |
| Principal dancer | 16 |
| Principal course | 16 |
| Principal constituent | 21 |
| Principal conductor at La Scala in 1898 | 39 |
| Principal component of arthropod exoskeletons | 45 |
| Principal component | 19 |
| Principal commodity | 19 |
| Principal church area | 21 |
| Principal charges? | 18 |
| Principal artery | 16 |
| Principal actors | 16 |
| Principal | 9 |
| Prince____, British Columbia port of call | 41 |
| Princewood | 10 |
| Princeville greeting gift | 25 |
| Princetonian rival | 18 |
| Princetonian or Yalie | 21 |
| Princetonian | 12 |
| Princeton, to N.Y.C., e.g. | 26 |
| Princeton, for one | 18 |
| Princeton's Tiger, e.g. | 27 |
| Princeton's stadium | 23 |
| Princeton's mascot | 22 |
| Princeton's locale | 22 |
| Princeton's League | 22 |
| Princeton's historic ___ Hall | 33 |
| Princeton team | 14 |
| Princeton supporters | 20 |
| Princeton rival | 15 |
| Princeton Review subj. | 22 |
| Princeton Review or Kaplan study | 32 |
| Princeton Review coursework | 27 |
| Princeton player | 16 |
| Princeton or Clemson mascot | 27 |
| Princeton mascot | 16 |
| Princeton jazzman? | 18 |
| Princeton greenery | 18 |
| Princeton graduates in journalism? | 34 |
| Princeton eight, e.g. | 21 |
| Princeton color | 15 |
| Princeton athlete | 17 |
| Princeton and Yale | 18 |
| Princeton 11 | 12 |
| Princesses' crowns | 22 |
| PrincessÂ’ headgear | 22 |
| Princess-testing item | 21 |
| Princess-prodder | 16 |
| Princess, in Punjab | 19 |
| Princess, e.g. | 14 |
| Princess's tormentor | 24 |
| Princess's topper | 21 |
| Princess's sleeping problem | 31 |
| Princess's sleep disturber | 30 |
| Princess's sensibility | 26 |
| Princess's problem, in a fairy tale | 39 |
| Princess's problem | 22 |
| Princess's pea, e.g. | 24 |