| Pioneering scientist Robert | 27 |
| Pioneering Seattle grunge band | 30 |
| Pioneering sex researcher who frequently wore bow ties | 54 |
| Pioneering sort | 15 |
| Pioneering step | 15 |
| Pioneering stop-motion animation film | 37 |
| Pioneering Toyota | 17 |
| Pioneering U.S. feminist | 24 |
| Pioneering underground publication of the 1960s | 47 |
| Pioneering video game | 21 |
| Pioneering video game company | 29 |
| Pioneering video game systems | 29 |
| Pioneering videogame | 20 |
| Pioneering weather satellite | 28 |
| Pioneering woman lawyer Bradwell | 32 |
| Pioneering women's rights advocate | 38 |
| Pioneers | 8 |
| Pioneers of a 365-day calendar | 30 |
| Pioneers of ambient house, with "the" | 47 |
| Pioneers' convoy | 20 |
| Pioneers' route | 19 |
| Pioneers' trail | 19 |
| Pioneers' transport | 23 |
| Pioneers' transports | 24 |
| Pioneers' vehicles | 22 |
| Pioneers' wagon | 19 |
| Pioneers? | 9 |
| Pions and muons | 15 |
| Pions, e.g. | 11 |
| Pious | 5 |
| Pious frauds | 12 |
| Pious insincerity | 17 |
| Pious jargon | 12 |
| Pious language | 14 |
| Pious Milne character? | 22 |
| Pious Pennsylvania people | 25 |
| Pious person | 12 |
| Pious person, in Paris: Abbr. | 29 |
| Pious platitude | 15 |
| Pious poem | 10 |
| Pious Russian Protestants | 25 |
| Pious sort | 10 |
| Pious spouse's ultimatum? | 29 |
| Pious talk | 10 |
| Piousness | 9 |
| Pip | 3 |
| Pip and others | 14 |
| Pip at the start of "Great Expectations," e.g. | 56 |
| Pip location | 12 |
| Pip of "Great Expectations," e.g. | 43 |
| Pip on a card | 13 |
| Pip or kernel | 13 |
| Pip or pippin | 13 |
| Pip or pit | 10 |
| Pip was his cabin boy | 21 |
| Pip ___ (during the afternoon, to a Brit) | 41 |
| Pip's brother-in-law | 24 |
| Pip's love in "Great Expectations" | 48 |
| Pip's love, in literature | 29 |
| Pip's romantic interest in "Great Expectations" | 61 |
| Pip's spurner | 17 |
| Pip-pip | 7 |
| Pip-pip! | 8 |
| Pip-squeaks | 11 |
| Pip; dilly | 10 |
| Pip; lulu | 9 |
| Pipa shape | 10 |
| Pipe | 4 |
| Pipe accompanier | 16 |
| Pipe alternative | 16 |
| Pipe application | 16 |
| Pipe at some Turkish restaurants | 32 |
| Pipe attachment | 15 |
| Pipe bend | 9 |
| Pipe bends | 10 |
| Pipe blocker | 12 |
| Pipe bowl material | 18 |
| Pipe bowl source, perhaps | 25 |
| Pipe buildup | 12 |
| Pipe cement | 11 |
| Pipe choices | 12 |
| Pipe cleaner | 12 |
| Pipe cleaner centers | 20 |
| Pipe cleaner, you might say | 27 |
| Pipe cleaner? | 13 |
| Pipe cleaners | 13 |
| Pipe collar | 11 |
| Pipe connection | 15 |
| Pipe connections | 16 |
| Pipe connector | 14 |
| Pipe contents | 13 |
| Pipe contents, maybe | 20 |
| Pipe coupling | 13 |
| Pipe curve | 10 |
| Pipe device | 11 |
| Pipe down? | 10 |
| Pipe dream | 10 |
| Pipe dream, say | 15 |
| Pipe elbow | 10 |
| Pipe elbows | 11 |