| 100% | WHOS | 4 | "___ on First?" (Abbott and Costello baseball routine) |
| 74% | WHO | 3 | Name of the first baseman in Abbott and Costello's baseball routine |
| 70% | WHO | 3 | Person "on first" in an Abbott and Costello routine |
| 68% | WHO | 3 | First baseman in an Abbott and Costello routine |
| 65% | WHO | 3 | First baseman in a classic Abbott and Costello routine |
| 64% | BASEMEN | 7 | Who, What and I Don't Know, in Abbott and Costello's "Who's on First?" routine |
| 64% | WHO | 3 | Abbott and Costello's first baseman |
| 64% | WHO | 3 | Abbott and Costello’s first baseman |
| 62% | RIORITA | 7 | Abbott and Costello movie based on a Ziegfeld musical |
| 61% | WHOS | 4 | Title word of an Abbott and Costello routine |
| 55% | RIORITA | 7 | 1942 Abbott and Costello film set at a resort on the U.S.-Mexico border |
| 55% | WHO | 3 | First baseman in an Abbott & Costello routine |
| 51% | DUO | 3 | Abbott and Costello, e.g. |
| 51% | TEAM | 4 | Abbott and Costello, e.g. |
| 49% | DUOS | 4 | Abbott and Costello and Burns and Allen |
| 49% | COEDS | 5 | Abbott and Costello's "Here Come the ___" |
| 49% | RIORITA | 7 | 1942 Abbott and Costello movie |
| 49% | RIORITA | 7 | 1942 Abbott and Costello film |
| 49% | WHOSON1ST | 9 | Classic Abbott and Costello bit |
| 49% | RIORITA | 7 | 1942 Abbott and Costello comedy |
| 48% | RIORITA | 7 | 1942 Abbott and Costello musical comedy |
| 48% | LOU | 3 | Costello in the "Who's on First?" comedy routine |
| 48% | SECOND | 6 | What's position, to Abbott and Costello |
| 47% | PRIVATES | 8 | Buck __, film, Abbott and Costello go to war |
| 47% | DST | 3 | Clock shifting routine first instituted on April 30, 1916 by the German Empire and Austria-Hungary (abbr.) |
| 46% | HYDE | 4 | Karloff role in a 1953 Abbott and Costello film |
| 46% | LOU | 3 | Costello of Abbott and Costello |
| 46% | LOUS | 4 | "__ on First": book about comedian Costello |
| 46% | LOUS | 4 | ''__ on First'' (book about Costello) |
| 44% | LOU | 3 | First name of Costello, from the comedy duo Abbott and Costello |