| 100% | CIO | 3 | Half of a 1955 merger, for short |
| 72% | CIO | 3 | Half of a 1955 merger |
| 71% | AFL | 3 | Half of a 1955 merger: Abbr. |
| 71% | CIO | 3 | Half of a 1955 merger: Abbr. |
| 68% | AFL | 3 | Half of a 1955 union merger |
| 68% | SEMI | 4 | Half of a circle, for short |
| 67% | SEM | 3 | Half of a school year, for short |
| 65% | AFL | 3 | Half of a noted 1955 merger: Abbr. |
| 64% | SEM | 3 | Half of a college academic year, for short |
| 54% | NYNEX | 5 | Half of a 1997 telecom merger |
| 54% | EXXON | 5 | Half of a giant 1999 merger |
| 54% | AFL | 3 | Half of a '55 union merger |
| 54% | NFL | 3 | Half of a 1970 sports merger |
| 53% | MOBIL | 5 | Half of a 1999 oil-industry merger |
| 53% | SEC | 3 | Half of a short unit of time? |
| 52% | METRO | 5 | Of a city, for short |
| 51% | YIN | 3 | Half of a Chinese symbol for dualism |
| 51% | AFL | 3 | One half of a landmark 1970 merger (abbr.) |
| 51% | ATT | 3 | One half of a controversial merger |
| 51% | SEC | 3 | Fraction of a minute, for short |
| 51% | QUIN | 4 | One of a fivesome, for short |
| 51% | RBI | 3 | Result of a squeeze, for short |
| 51% | TKO | 3 | End of a match, for short |
| 51% | SECS | 4 | Parts of a minute, for short |
| 51% | QUAD | 4 | Target of a squat, for short |
| 51% | CPU | 3 | Heart of a computer, for short |
| 51% | SECS | 4 | Sixtieths of a minute, for short |
| 51% | WDS | 3 | Constituents of a sentence, for short |
| 51% | MGT | 3 | Leadership of a company, for short |
| 51% | OCD | 3 | Cause of a tic, for short |