| 100% | FEB | 3 | It changes length every four years: Abbr. |
| 49% | GENERALELECTION | 15 | It happens every four years |
| 41% | OLYMPICS | 8 | Event once every four years |
| 41% | PUC | 3 | Meeting normally held every four years to discuss issues affecting international mail services (abbr.) |
| 40% | ISR | 3 | Country that hosts the Maccabiah Games every four years, the next being next year (abbr.) |
| 40% | ELECTORAL | 9 | College that convenes every four years |
| 40% | OLYMPIC | 7 | Winter games held every four years |
| 39% | LEAPDAY | 7 | Addition to the calendar every four years |
| 39% | BIGHAND | 7 | It changes position every minute |
| 39% | LEAPDAY | 7 | February 29, an event happens every four years |
| 38% | RYDERCUP | 8 | Competition hosted by the U.S. every four years |
| 38% | WORLDCUP | 8 | International soccer tournament held every four years: 2 wds. |
| 37% | ANNIVERSARY | 11 | It happens every year |
| 37% | IOWAN | 5 | Midwesterner who sees a lot of presidential candidates every four years |
| 37% | WORLDCUP | 8 | Global soccer tournament that takes place every four years: 2 wds. |
| 36% | FRI | 3 | It's "Black" once a year: Abbr. |
| 36% | TREE | 4 | It gets a ring every year |
| 36% | ONT | 3 | It borders four Great Lakes: Abbr. |
| 36% | ONT | 3 | It touches four Great Lakes: Abbr. |
| 35% | FLU | 3 | It goes around every year |
| 34% | PHD | 3 | Advanced degree that can take four years to earn: Abbr. |
| 34% | QUE | 3 | Its flag has four fleurs-de-lis: Abbr. |
| 34% | ETA | 3 | Bad weather might change it: Abbr. |
| 32% | SSN | 3 | Only four-ninths of it is usually shown: Abbr. |
| 32% | DNA | 3 | A radioactive spider changed it in Peter Parker: Abbr. |
| 31% | SSN | 3 | You might need just the "last four" of it: Abbr. |
| 31% | OMOO | 4 | It was published four years before "Moby-Dick" |
| 31% | EPA | 3 | Government organization with a Climate Change section of its website: Abbr. |
| 31% | LPGA | 4 | Patti Tavatanakit was its Rookie of the Year for 2021: Abbr. |
| 30% | BAS | 3 | Some four-year degrees: Abbr. |