| 100% | OONA | 4 | 54-year-old Charlie's 18-year-old bride |
| 56% | DRIVINGAGE | 10 | *It's between 16 and 18 years old in most states |
| 45% | RICKYSKAGGS | 11 | "Highways & Heartaches" country singer who turned 70 years old on July 18, 2024 (2 wds.) |
| 45% | CLAIREDANES | 11 | "Homeland" actress who hosted "Saturday Night Live" when she was 18 years old: 2 wds. |
| 44% | SARAGILBERT | 11 | "The Conners" actress who hosted "Saturday Night Live" when she was 18 years old: 2 wds. |
| 43% | VOTINGAGE | 9 | 18 years, in the U.S. |
| 43% | ADULT | 5 | One who's 18 or older |
| 42% | OONA | 4 | Young wife (age 18) of Charlie Chaplin (age 54) |
| 42% | TEG | 3 | A sheep that's two years old |
| 42% | ELMO | 4 | Red Muppet who's three years old |
| 42% | USA | 3 | Country that's 242 years old: Abbr. |
| 42% | BEVERLYCLEARY | 13 | Beloved children's author (1916-2021) who created 18-Across and 39-Across who would have turned 105 years old tomorrow (2 wds.) |
| 41% | JUDYGARLAND | 11 | 18-Across and 29-Across actress/singer who would have turned 100 years old tomorrow (2 wds.) |
| 40% | TWILIGHT | 8 | Guess the movie from the badly explained plot! "Love triangle between an 18 year old, a vampire and a werewolf" |
| 40% | NEHI | 4 | Pop that's over 80 years old |
| 40% | OREO | 4 | Cookie that's over 100 years old |
| 39% | FOAL | 4 | Horse that's less than one year old |
| 39% | PAPA | 4 | Smurf who's more than 500 years old |
| 39% | ETON | 4 | Prep school that's over 500 years old |
| 39% | ELMO | 4 | Muppet who's always 3.5 years old |
| 39% | ASPCA | 5 | Humane org. that's over 150 years old |
| 39% | TEEN | 4 | Person who's not yet 20 years old |
| 39% | JUSTINBIEBER | 12 | Singer of 18-Across and 32-Across who turns 25 years old on March 1 (2 wds.) |
| 39% | SYD | 3 | Actor Chaplin, Charlie's older brother |
| 39% | USVOTINGAGE | 11 | 18 years |
| 38% | ELMO | 4 | Muppet who's always 3 1/2 years old |
| 38% | PETES | 5 | ___ Tavern, Manhattan pub that's over 150 years old |
| 38% | CADETTE | 7 | Girl Scout who's 12 to 14 years old |
| 38% | BOBBYBROWN | 10 | Former member of 18-Across and singer of 30-Across who turns 50 years old today (2 wds.) |
| 38% | CMI | 3 | Year in Edward the Elder's reign |