| Führer's contemporary | 28 |
| Führer's followers | 25 |
| Fünf fifth | 13 |
| Fünf minus vier | 18 |
| Fünf und drei | 16 |
| Für whom Beethoven wrote a bagatelle | 39 |
| FBI abbreviation | 16 |
| FBI action | 10 |
| FBI agent | 9 |
| FBI agent in "Tower Heist" | 36 |
| FBI agents | 10 |
| FBI agents, e.g. | 16 |
| FBI agt. | 8 |
| FBI ally | 8 |
| FBI and Marine Corps training site | 34 |
| FBI attacks | 11 |
| FBI bribery probe in 1980 news | 30 |
| FBI capture of April 1996 | 25 |
| FBI center | 10 |
| FBI center? | 11 |
| FBI cousin | 10 |
| FBI employee | 12 |
| FBI employee, e.g. | 18 |
| FBI employee, slangily | 22 |
| FBI employees | 13 |
| FBI employees: Abbr. | 20 |
| FBI evidence, at times | 22 |
| FBI facility since 1932 | 23 |
| FBI fellow | 10 |
| FBI figure | 10 |
| FBI figures | 11 |
| FBI files | 9 |
| FBI force, slangily | 19 |
| FBI guy | 7 |
| FBI guys | 8 |
| FBI guys, e.g. | 14 |
| FBI head Robert | 15 |
| FBI identifier | 14 |
| FBI investigations | 18 |
| FBI investigator | 16 |
| FBI investigator, slangily | 26 |
| FBI investigators | 17 |
| FBI lab material | 16 |
| FBI lab sample | 14 |
| FBI member? | 11 |
| FBI operative | 13 |
| FBI operatives | 14 |
| FBI part | 8 |
| FBI personnel | 13 |
| FBI quarry | 10 |
| FBI statistic | 13 |
| FBI sting | 9 |
| FBI sting of the 1970s and 1980s | 32 |
| FBI sting of the late '70s | 30 |
| FBI sting that began during Carter's presidency | 51 |
| FBI tactics | 11 |
| FBI title: Abbr. | 16 |
| FBI undercover agent Donnie, title subject of a 1997 film | 57 |
| FBI worker | 10 |
| FBI worker, briefly | 19 |
| FBI worker: Abbr. | 17 |
| FBI workers | 11 |
| FBI's govt. division | 24 |
| FBI's guys | 14 |
| FBI, for one | 12 |
| FBI, French-style | 17 |
| FCC attorney's specialty, perhaps | 37 |
| FCC concern | 11 |
| FCC concerns | 12 |
| FCC licensee | 12 |
| FCC member | 10 |
| FCC target | 10 |
| FD&C Blue No. 2 | 19 |
| FD&C-certified substances | 29 |
| FDA and NFL, e.g. | 17 |
| FDA component | 13 |
| FDA guideline | 13 |
| FDA part | 8 |
| FDA pt. | 7 |
| FDA suggestion | 14 |
| FDA-banned herbal supplement | 28 |
| FDA-banned weight-loss supplement | 33 |
| FDIC concern | 12 |
| FDIC-backed investments | 23 |
| FDNY member, perhaps | 20 |
| FDR / ___ / DDE | 15 |
| FDR affliction | 14 |
| FDR agency | 10 |
| FDR aide | 8 |
| FDR and HST | 11 |
| FDR and JFK | 11 |
| FDR and Truman, fraternally | 27 |
| FDR biographer | 14 |
| FDR biographer Joseph | 21 |
| FDR brainchild | 14 |
| FDR broadcast | 13 |
| FDR cabinet member | 18 |
| FDR creation | 12 |
| FDR creation of 1933 | 20 |
| FDR creation with a lot of power? | 33 |