| 100% | SILVERAGE | 9 | Second-greatest period in the history of something |
| 65% | SILVERAGE | 9 | Second-greatest period in something's history |
| 57% | JETAGE | 6 | Period in aviation history marked by the advent of turbine engines |
| 56% | HOLOCENE | 8 | In geology, the second epoch of the Quaternary period |
| 55% | ARA | 3 | The Era of ___ (famous period in Notre Dame football history) |
| 52% | AMID | 4 | In the middle of something |
| 52% | AMID | 4 | In the midst of something |
| 52% | EOCENE | 6 | Second epoch of the Palaeogene period in the geologic timescale |
| 52% | DUSTBOWL | 8 | Period of black blizzards in the Great Plains |
| 52% | BEALE | 5 | Important street in the history of Memphis blues |
| 52% | STONEWALL | 9 | Pivotal bar in the history of gay rights |
| 52% | EON | 3 | Period in the earth's history |
| 52% | JURASSIC | 8 | Period in the Age of Dinosaurs |
| 51% | EON | 3 | Period in the evolution of a planet |
| 51% | ALITO | 5 | First justice alphabetically in the history of the Supreme Court |
| 50% | ERIE | 4 | Second smallest of the Great Lakes in surface area |
| 50% | ACE | 3 | Great card in the game of war |
| 49% | EON | 3 | Phanerozoic ___ (current period in the earth's history) |
| 48% | MEDIEVAL | 8 | Period in history also called the Middle Ages |
| 48% | MOTHERLODE | 10 | In the ___, there's the greatest concentration of ___ |
| 47% | ERA | 3 | The ___ of Good Feelings (period in early-1800s US history) |
| 47% | HYDRA | 5 | Monster in the second labor of Hercules |
| 47% | CONTEMPORANEOUS | 15 | Occurring in the same period of time |
| 47% | MOON | 4 | Mono version of something in the sky |
| 47% | OBSTRUCT | 8 | To get in the way of something |
| 47% | MAGMA | 5 | Something in the depths of Mauna Kea |
| 47% | DYLAN | 5 | About whom Obama said "There is not a bigger giant in the history of American music" |
| 47% | ERA | 3 | Period of time, in history |
| 47% | ERA | 3 | Period of time in history |
| 47% | COLTRANE | 8 | John, one of the greatest saxophone players in history, who was the tenor saxophonist on the historic album "Kind of Blue" |