| 100% | LOVE | 4 | “___ is the only gold”: Tennyson |
| 65% | SHIELDS | 7 | Claressa who is the only American boxer to win consecutive Olympic gold medals |
| 58% | REGGIEMILLER | 12 | Shaquille and ___ were the only two players in both the gold medal-winning national teams of 1994 and 1996: 2 wds. |
| 57% | ASCOT | 5 | Famed UK racecourse where "Yeats" is the only 4-time winner of the Gold Cup, although "Stradivarius" has won the last 3 years |
| 56% | STEFFIGRAF | 10 | Tennis player who is the only player (man or woman) to win a Grand Slam and Olympic gold medal in one year: 2 wds. |
| 55% | PHD | 3 | Wilson was the only president with one |
| 55% | IPODS | 5 | Touches are the only ones still produced |
| 55% | IOWA | 4 | Hoover was the only president born there |
| 54% | ANARCHY | 7 | "___ is the only slight glimmer of hope": Mick Jagger |
| 54% | ZEE | 3 | Arizona is the only state to have one |
| 54% | ANI | 3 | April is the only month that has one |
| 54% | STOICISM | 8 | Philosophy that teaches virtue is the only good |
| 54% | BEARD | 5 | Dopey is the only Disney dwarf without one |
| 54% | DOESNTEVERYBODY | 15 | "I can't be the only one, right?" |
| 53% | VALKILMER | 9 | Is the only blonde actor to have played Batman: 2 wrds. |
| 53% | TEE | 3 | August is the only month that ends with one |
| 53% | WALLED | 6 | Quebec City is the only __ city in North America |
| 53% | STATE | 5 | Washington is the only one named for a president |
| 53% | WHOLENOTE | 9 | It may be the only thing in a bar |
| 53% | YOUTOO | 6 | "And here I thought I was the only one" |
| 52% | BIRDS | 5 | "___ are the only "direct" descendants of 15a that are alive today!" |
| 52% | PATENT | 6 | Lincoln is the only U.S. president to have one |
| 52% | SILVER | 6 | A __ bullet is the only way to kill a werewolf |
| 52% | MBA | 3 | G.W. Bush is the only president who earned one |
| 52% | IRINA | 5 | Chess player Krush who is the only American woman Grandmaster |
| 52% | ADLER | 5 | Irene who was the only woman to outwit Sherlock Holmes |
| 52% | SEWELL | 6 | Anna whose "Black Beauty" was the only novel she wrote |
| 52% | PHD | 3 | Woodrow Wilson was the only president with this degree: Abbr. |
| 51% | DOMINOSOLEFATRELATIVE | 21 | "Blueberry Hill" singer is the only portly person in the family? |
| 51% | BEARD | 5 | Dopey is the only one of the Seven Dwarfs without one |