| Rare baseball event | 19 |
| Rare baseball hit | 17 |
| Rare baseball outcomes | 22 |
| Rare batteries | 14 |
| Rare battery varieties | 22 |
| Rare beauty | 11 |
| Rare bill | 9 |
| Rare bills | 10 |
| Rare bird | 9 |
| Rare bird of a sort | 19 |
| Rare birds | 10 |
| Rare birth | 10 |
| Rare birth occurrence | 21 |
| Rare birth phenomenon | 21 |
| Rare birthday | 13 |
| Rare blood | 10 |
| Rare blood classification | 25 |
| Rare blood designation | 22 |
| Rare blood type | 15 |
| Rare blood type, for short | 26 |
| Rare blood type, informally | 27 |
| Rare blood type: Abbr. | 22 |
| Rare bond-market phenomenon | 27 |
| Rare book dealer's abbr. | 28 |
| Rare book-dealer's unit | 27 |
| Rare Breeders' Cup Classic entrant | 38 |
| Rare bric-a-brac | 16 |
| Rare case | 9 |
| Rare child | 10 |
| Rare clock number | 17 |
| Rare color | 10 |
| Rare color? | 11 |
| Rare comment from a sharpshooter | 32 |
| Rare commodity on an airplane | 29 |
| Rare compared to medium? | 24 |
| Rare craps roll | 15 |
| Rare Cremona violas | 19 |
| Rare delivery | 13 |
| Rare delivery? | 14 |
| Rare diamond event | 18 |
| Rare dice rolls | 15 |
| Rare driving choices | 20 |
| Rare driving result | 19 |
| Rare dynamic marking seen in Tchaikovsky's Sixth Symphony | 61 |
| Rare eagles | 11 |
| Rare electee | 12 |
| Rare element in platinum ores | 29 |
| Rare entree? | 12 |
| Rare equine hybrid | 18 |
| Rare event | 10 |
| Rare event for a hobo | 21 |
| Rare event in Hell | 18 |
| Rare event in horseracing | 25 |
| Rare ex-prisoner | 16 |
| Rare eye color | 14 |
| Rare family member | 18 |
| Rare fellow | 11 |
| Rare find | 9 |
| Rare first-date activity | 24 |
| Rare football game ending | 25 |
| Rare football result | 20 |
| Rare gas | 8 |
| Rare golf shot | 14 |
| Rare golf-hole score | 20 |
| Rare goose | 10 |
| Rare great apes | 15 |
| Rare green beryls | 17 |
| Rare gridiron capers | 20 |
| Rare gymnastics score | 21 |
| Rare Himalayan sighting | 23 |
| Rare hit | 8 |
| Rare hit for a slow runner | 26 |
| Rare hit for most catchers | 26 |
| Rare imports, maybe | 19 |
| Rare indication? | 16 |
| Rare indicator? | 15 |
| Rare individual | 15 |
| Rare individuals | 16 |
| Rare instrumental grouping | 26 |
| Rare Italian violin | 19 |
| Rare Italian violins | 20 |
| Rare item in auction lots | 25 |
| Rare key in which a section of Chopin's "Polonaise Fantaisie" is written | 86 |
| Rare kind of ball game | 22 |
| Rare large white animal killed by hunters in Nova Scotia last fall, which sparked an outrage due to its sacred status to the Mi'kmaq people | 143 |
| Rare meat color | 15 |
| Rare medical classification | 27 |
| Rare medical service | 20 |
| Rare metallic element | 21 |
| Rare Monopoly rolls | 19 |
| Rare multiple birth | 19 |
| Rare museum display | 19 |
| Rare mushroom? | 14 |
| Rare NFL game ending | 20 |
| Rare NFL game result | 20 |
| Rare night sight | 16 |
| Rare object, sometimes | 22 |
| Rare objet d'art | 20 |
| Rare occasion | 13 |
| Rare occurrence at the U.S. Open on Father's Day that's a common occurrence at the U.S. Open on Labor Day | 113 |