| 100% | PSI | 3 | First letter in the Greek spelling of "Psyche" |
| 78% | THETA | 5 | Letter in the Greek spelling of Athens |
| 78% | NUS | 3 | Letters in the Greek spelling of "Parthenon" |
| 70% | TAU | 3 | First letter in the fourth quarter of the Greek alphabet |
| 65% | ALPHA | 5 | First letter in the Greek alphabet |
| 62% | ETA | 3 | Letter in the classical spelling of "Athena" |
| 62% | ETA | 3 | First letter in the Greek alphabet whose name is three letters long |
| 58% | TSE | 3 | Russian letter in the spelling of "tsar" |
| 57% | ALPHA | 5 | First letter of the Greek alphabet |
| 54% | NEWS | 4 | First letters of the words hidden in the four longest answers |
| 54% | BLUE | 4 | Color of the first letter in the Google logo |
| 54% | EEL | 3 | Fish hidden in the first three letters of "electricity" |
| 54% | TSE | 3 | The first letter of "tsar," in Cyrillic |
| 54% | OREO | 4 | Cookie in the shape of its first and last letters |
| 53% | TAU | 3 | In the system of Greek numerals this letter has a value of 300 |
| 53% | ACROSTIC | 8 | The first letter of each line spells a word |
| 53% | KAPPA | 5 | Letter in the greek alphabet |
| 53% | BETH | 4 | First letter in the Torah |
| 52% | TWENTYFOUR | 10 | Letters in the Greek alphabet |
| 52% | PHONETIC | 8 | Apt word spelled out by the first letters of eight answers in this puzzle |
| 52% | ALEPH | 5 | First letter in the Hebrew alphabet |
| 52% | ALFA | 4 | First letter in the NATO alphabet |
| 52% | PSI | 3 | Greek letter spelled out at the start of a Beatles title? |
| 51% | DELTA | 5 | Letter in the Greek or NATO alphabet |
| 51% | ALFA | 4 | First letter in the NATO phonetic alphabet |
| 51% | SEALS | 5 | Animals whose habitat can be found in the first three letters of their name |
| 51% | PHI | 3 | Greek letter, or the first three letters of a Pennsylvania city |
| 51% | SIGMA | 5 | 18th letter in the Greek alphabet |
| 51% | UPSILON | 7 | 20th letter in the Greek alphabet |
| 51% | TAU | 3 | 19th letter in the Greek alphabet |