| 100% | FOOL | 4 | One honored in on the 1st of April |
| 58% | FOOL | 4 | Trick someone on the 1st of April, say |
| 53% | CHAR | 4 | One in on the founding of a company |
| 49% | REESE | 5 | One of the brothers on "Malcolm in the Middle" |
| 47% | REESE | 5 | One of Malcolm's older brothers on "Malcolm in the Middle" |
| 47% | OLDSMOBILE | 10 | The final one came out of a Lansing plant in April 2004 |
| 47% | DJS | 3 | Ones in control of the aux cord on a road trip, essentially |
| 47% | LAVA | 4 | What erupted from a volcano on the Caribbean island of St. Vincent starting in April |
| 46% | ZEPPO | 5 | One of the brothers in a garbage can on a ''Time'' cover (1932) |
| 46% | HARPO | 5 | One of the brothers in a garbage can on a ''Time'' cover (1932) |
| 45% | DANCER | 6 | One getting in on the hustle? |
| 45% | ANNEHATHAWAY | 12 | "Interstellar" actress who appears in one of the stories on 27-Across (2 wds.) |
| 44% | TAMBOUR | 7 | In real tennis, the sloping buttress on one side of the receiver's end of the court |
| 44% | JOHNSLATTERY | 12 | "Mad Men" actor who appears in one of the stories on 27-Across (2 wds.) |
| 44% | IRAHAYES | 8 | Native American who was one of the six flag-raisers on Iwo Jima in WWII |
| 43% | CARD | 4 | One in on the deal? |
| 43% | ARBOR | 5 | Subject of a celebration on the last Friday in April |
| 42% | SSW | 3 | One of the half winds on a compass rose that was named "Ostro-Libeccio" in the 14th and 15th centuries |
| 42% | WILLIENELSON | 12 | "Always on My Mind" singer who won one of the first Grammy Legend Awards, in 1990: 2 wds. |
| 42% | AGOG | 4 | On the edge of one's seat |
| 42% | RIVETED | 7 | On the edge of one's seat |
| 42% | ENPOINTE | 8 | On the tips of one's toes |
| 42% | ARBOR | 5 | ___ Day, celebration on the last Friday in April |
| 42% | SUNNI | 5 | One who fasts on the 10th of Muharram |
| 42% | ASTO | 4 | On the topic of, in memos (2 wds.) |
| 42% | TADPOLE | 7 | One on the verge of croaking? |
| 42% | SEEDS | 5 | Ones on the outsides of brackets |
| 41% | LES | 3 | "___ Miserables," musical based on Victor Hugo's novel that is one of the longest-running musicals in the West End |
| 41% | NAME | 4 | Info to fill in on the first line of many forms |
| 41% | DUKE | 4 | ___ Ellington, pianist who collaborated on more than 1000 compositions and is considered one of the most influential figures in jazz |