| 100% | IRS | 3 | Org. featured in the book "Many Unhappy Returns" |
| 56% | IRS | 3 | Subject of the book "Many Unhappy Returns": Abbr. |
| 56% | IRS | 3 | Subj. of the book "Many Unhappy Returns" |
| 50% | NASA | 4 | Org. featured in the movie "Hidden Figures" |
| 49% | PGA | 3 | Org. featured in the documentary series "Full Swing" |
| 49% | IRS | 3 | Subj. of the 2005 book "Many Unhappy Returns" |
| 47% | MENSA | 5 | Org. featured in the Simpsons episode "They Saved Lisa's Brain" |
| 47% | MPAA | 4 | Org. featured in the documentary "This Film Is Not Yet Rated" |
| 47% | RATS | 4 | Rodents featured in the Chinese zodiac for most of 2020 |
| 47% | BABY | 4 | "___ Shark" (song featured in the most-viewed YouTube video ever) |
| 46% | INDEX | 5 | Section in the back of many books |
| 46% | CIA | 3 | Org. in many Tom Clancy books |
| 45% | NASCAR | 6 | Org. featured in "Talladega Nights: The Ballad of Ricky Bobby" |
| 45% | STEPS | 5 | Word in the title of many self-help books |
| 45% | IRS | 3 | Org. responsible for many unhappy returns? |
| 45% | LESBIAN | 7 | Like many featured in the Out100 list |
| 45% | MILA | 4 | ___ Kunis, American action star who featured in the 2010 movie "The Book of Eli" |
| 44% | USAF | 4 | Org. featured in "The Right Stuff" |
| 43% | HORSERACING | 11 | Equestrian sport featured in most of 36-Across's books (2 wds.) |
| 43% | HARE | 4 | Word in the title of many Looney Tunes cartoons featuring Bugs Bunny |
| 43% | TRIAL | 5 | One of many in the book of Job |
| 43% | EELS | 4 | The Book of ___ (2020 best seller about "the Most Mysterious Creature in the Natural World") |
| 42% | CIA | 3 | Intelligence org. in the Susan Williams book "White Malice" |
| 42% | YAK | 3 | Animal on the "Y" page in many alphabet books |
| 42% | RHYME | 5 | What the lines in many Dr. Seuss books do |
| 42% | BADKARMA | 8 | Many unhappy returns? |
| 42% | REDROCK | 7 | Component of many sandstone features in the Southwest |
| 42% | AAA | 3 | Org. found early in the phone book |
| 41% | ACLU | 4 | Private org. involved in the most Supreme Court cases |
| 41% | ORB | 3 | Crystal object featured in Leonardo da Vinci's "Salvator Mundi," the most expensive painting ever sold |