| 100% | YEAGER | 6 | He was the first to break the sound barrier, Chuck |
| 72% | YEAGER | 6 | Chuck, first pilot to break the sound barrier |
| 63% | CHUCK | 5 | US pilot Yeager, first to break the sound barrier |
| 62% | WHIP | 4 | First object made by humans to break the sound barrier |
| 52% | YEAGER | 6 | Chuck who broke the sound barrier |
| 49% | ORR | 3 | He was the first hockey player to have 100 assists in one season |
| 48% | SONICBOOM | 9 | Explosion heard when the sound barrier is broken |
| 46% | KAFKA | 5 | He wrote "A first sign of the beginning of understanding is the wish to die" |
| 45% | FOOTING | 7 | First-__, be the first to cross the threshold |
| 45% | WON | 3 | Was the first to cross the finish line |
| 44% | SPEEDIEST | 9 | First to break the tape |
| 44% | COIN | 4 | Be the first to use |
| 44% | COIN | 4 | Be the first to say |
| 44% | WIN | 3 | Be the first to finish |
| 44% | DISCOVER | 8 | Be the first to find |
| 43% | BOOM | 4 | Sound made when breaking the sound barrier |
| 42% | SHANE | 5 | Classic western hero who says "A man has to be what he is, Joey. Can't break the mold" |
| 42% | SONICBOOM | 9 | Sound of an aircraft breaking the sound barrier |
| 42% | AUS | 3 | Country which is home to the Great Barrier Reef and where Parakeets were first found |
| 42% | SONICBOOM | 9 | Noise heard when breaking the sound barrier |
| 42% | COEDS | 5 | Oberlin was the first to accept them |
| 42% | MONGOLS | 7 | They were the first to destroy Baghdad |
| 41% | BLAZEATRAIL | 11 | Be the first to accomplish something (and do it spectacularly!) |
| 41% | SST | 3 | It's not breaking the sound barrier anymore |
| 41% | CONCORDE | 8 | Supersonic plane, broke the sound barrier in 1969 |
| 41% | STATEDEPARTMENT | 15 | Thomas Jefferson was the first to lead it |
| 41% | DEE | 3 | Sandra who was the first to play "Gidget" |
| 41% | MBA | 3 | Harvard was the first to offer it (1908) |
| 41% | BESSEL | 6 | German astronomer who was the first to measure the distance to a star |
| 41% | ERIECANAL | 9 | The Seneca Chief was the first to travel its full length |