| Petrol station name | 19 |
| Petrol unit | 11 |
| Petrol units | 12 |
| Petrol utiliser | 15 |
| Petrol, e.g. | 12 |
| Petrol, stateside | 17 |
| Petrol-station accessory | 24 |
| Petrol-station stopper | 22 |
| Petroleum | 9 |
| Petroleum by-product | 20 |
| Petroleum byproduct | 19 |
| Petroleum cartel | 16 |
| Petroleum center on the Gulf of Mexico | 38 |
| Petroleum company | 17 |
| Petroleum company with a famous sign seen from Fenway Park | 58 |
| Petroleum company, informally | 29 |
| Petroleum component | 19 |
| Petroleum derivative | 20 |
| Petroleum distillate | 20 |
| Petroleum distillate used as fuel | 33 |
| Petroleum drum | 14 |
| Petroleum gases | 15 |
| Petroleum giant | 15 |
| Petroleum giant that merged with Chevron in 2005 | 48 |
| Petroleum giant's stock symbol | 34 |
| Petroleum gp. | 13 |
| Petroleum hydrocarbon | 21 |
| Petroleum ingredients | 21 |
| Petroleum magnate | 17 |
| Petroleum name | 14 |
| Petroleum org. | 14 |
| Petroleum pathway | 17 |
| Petroleum plant | 15 |
| Petroleum processing by-product | 31 |
| Petroleum producers org. | 24 |
| Petroleum product | 17 |
| Petroleum residue | 17 |
| Petroleum ship | 14 |
| Petroleum source | 16 |
| Petroleum sources | 17 |
| Petroleum tankers | 17 |
| Petroleum-carrying ship | 23 |
| Petroleum-carrying vessel | 25 |
| Petroleum-cartel inits. | 23 |
| Petroleum-like liquids | 22 |
| Petroleum-packed peninsula | 26 |
| Petroleum-potable blend | 23 |
| Petroleum-regulating gp. | 24 |
| Petrologist's specimen | 26 |
| Petrova of the silents | 22 |
| Petrozavodsk's lake | 23 |
| Petruchio tamed her | 19 |
| Petruchio tames her | 19 |
| Petruchio's activity | 24 |
| Petruchio's bride | 21 |
| Petruchio's challenge | 25 |
| Petruchio's imperative? | 27 |
| Petruchio's Kate, e.g. | 26 |
| Petruchio's Katherina | 25 |
| Petruchio's love | 20 |
| Petruchio's mate | 20 |
| Petruchio's shrew | 21 |
| Petruchio's significant other | 33 |
| Petruchio's sister-in-law | 29 |
| Petruchio's town | 20 |
| Petruchio's wife | 20 |
| Petruchio, e.g. | 15 |
| Petruchio, for one | 18 |
| Petruchio, to Kate | 18 |
| Pets | 4 |
| Pets feared by postmen | 22 |
| Pets from the tropics | 21 |
| Pets in modern-day Persia? | 26 |
| Pets kept by The Joker | 22 |
| Pets named for their British Isles origin | 41 |
| Pets often have them | 20 |
| Pets on wheels | 14 |
| Pets owned by one of the Medicis? | 33 |
| Pets that are low to the ground | 31 |
| Pets that purr | 14 |
| Pets with blue-black tongues | 28 |
| Pets with dewlaps | 17 |
| Pets' friend: Abbr. | 23 |
| Pets' pals at times | 24 |
| PetSmart purchase | 17 |
| PetSmart purchase, perhaps | 26 |
| Pettable | 8 |
| Pettable purrer | 15 |
| Petted pet's sound | 22 |
| Petted, as cats | 15 |
| Petted; pampered | 16 |
| Petticoat | 9 |
| Petticoat alternative | 21 |
| Petticoat décor | 18 |
| Petticoat junction | 18 |
| Petticoat junction? | 19 |
| Pettifog | 8 |
| Pettifogger | 11 |
| Pettifoggers | 12 |
| Petting | 7 |