| DOALL | Busiest person in the office |
| TYPIST | Key person in the office (6) |
| NONE | Not a single person in the office |
| LEHAVRE | Which port on the mouth of the Seine River is the second busiest in France? (2,5) |
| ATL | City with the busiest airport in the world (Abbr.) |
| SIESTA | The rest of the afternoon in busiest airport (6) |
| OHARE | Chicago's international airport, one of the busiest in the world (1'4) |
| RHEIN | German name for a river flowing from the Swiss Alps to Rotterdam, considered the busiest waterway in |
| STEFANBRADL | The busiest stand-in rider in MotoGP this year. (6,5) |
| WATERLOO | Name of the battle in which Napoleon met his final defeat; or, the UK's busiest rail station (8) |
| ER | It's the busiest place in the hospital, for short |
| MIAMI | American city whose port is the busiest cruise ship passenger port in the world |
| WOOMERA | In the 1950s and 1960s, Australia’s ____Rocket Range was the world’s second-busiest after Cape Canaveral |
| TOKYO | City that has one of the busiest underground systems in the world (5) |
| LAX | Second-busiest airport in the U.S. |
| MALLOFAMERICA | Home to the busiest transit station in Minnesota |
| SYD | Code for the busiest airport in Australia |
| BOS | Code for the busiest airport in Massachusetts |
| CLAPHAM | ___ Junction, London railway station; the busiest in Britain by daily rail traffic (7) |
| ELLISISLAND | Historically, the USA's busiest immigrant inspection station, opened in 1892 |
