| 100% | MUON | 4 | Fundamental particle in the second generation of matter |
| 49% | SOLID | 5 | State of matter in which particle motion is the slowest |
| 44% | ASTO | 4 | In the matter of |
| 43% | ONE | 3 | Digit in the second decimal place of e |
| 43% | ANTINEUTRINOS | 13 | Particles in the Fermi theory of beta decay |
| 43% | ASTO | 4 | In the matter of: 2 wds. |
| 43% | ASTO | 4 | In the matter of: 2 wds |
| 42% | HYDRA | 5 | Monster in the second labor of Hercules |
| 42% | PLASMA | 6 | State of matter in the sun |
| 41% | COPILOT | 7 | The second officer in charge of flying an aircraft |
| 41% | MIDDLE | 6 | The second child of three is in this position |
| 40% | III | 3 | Roman numeral in the name of a second sequel |
| 40% | III | 3 | Roman numeral in the title of a second sequel |
| 39% | CLUTCH | 6 | Like a winning play in the final seconds of overtime |
| 39% | EQUALITY | 8 | Second tenet of the French Revolution, in English |
| 39% | JAPHETH | 7 | Second son of Noah in the Old Testament |
| 39% | JANUARY | 7 | Second month of winter in the Northern Hemisphere |
| 39% | GRISTLE | 7 | Second King of the Bergens in the Trolls film |
| 39% | ERIE | 4 | Second smallest of the Great Lakes in surface area |
| 38% | EOCENE | 6 | Second epoch of the Palaeogene period in the geologic timescale |
| 38% | ONAN | 4 | Second son of Judah and Shua in the Old Testament |
| 38% | STEVESAX | 8 | Second baseman in both of the Dodgers' 1980s World Series |
| 38% | NORMA | 5 | Second word of Elton John's "Candle in the Wind" |
| 38% | HOLOCENE | 8 | In geology, the second epoch of the Quaternary period |
| 38% | WWI | 3 | International conflict featured in the second season of "Downton Abbey" (Abbr.) |
| 38% | ONE | 3 | What the second letter of 12-Across denotes, in Roman numerals |
| 37% | ADO | 3 | Second word in the title of a Shakespeare comedy |
| 37% | SOX | 3 | Second word in the names of two MLB teams |
| 37% | III | 3 | Roman numeral you might see in the title of a movie's second sequel |
| 37% | ATOM | 4 | The fundamental building blocks of matter |