| Fortress barrier | 16 |
| Fortress | 8 |
| Fortran language developer | 26 |
| FORTRAN alternative | 19 |
| Fortnight's fourteen | 24 |
| Fortnight's 14 | 18 |
| Fortnight pair | 14 |
| Fortitude | 9 |
| Fortissimo | 10 |
| Fortifying | 10 |
| Fortify, in a way | 17 |
| Fortify, as punch | 17 |
| Fortify, as a town | 18 |
| Fortify with vitamins, e.g. | 27 |
| Fortify with iron | 17 |
| Fortify for fighting | 20 |
| Fortify Fillmore? | 17 |
| Fortify again | 13 |
| Fortify (oneself) | 17 |
| Fortify | 7 |
| Fortifies, as a military camp | 29 |
| Fortifies or braces | 19 |
| Fortifies anew | 14 |
| Fortifies | 9 |
| Fortified, in a way | 19 |
| Fortified works | 15 |
| Fortified work | 14 |
| Fortified wine | 14 |
| Fortified tower | 15 |
| Fortified stronghold | 20 |
| Fortified settlement | 20 |
| Fortified red wine | 18 |
| Fortified position offering protection from enemy fire | 54 |
| Fortified position | 18 |
| Fortified Portuguese wine | 25 |
| Fortified Portuguese city | 25 |
| Fortified places | 16 |
| Fortified military post | 23 |
| Fortified ice cream holder? | 27 |
| Fortified frontier | 18 |
| Fortified fare | 14 |
| Fortified elevation | 19 |
| Fortified dessert wine | 22 |
| Fortified city in Gaul | 22 |
| Fortified area of a castle | 26 |
| Fortified "cream" wine | 32 |
| Fortified | 9 |
| Fortifications with double parapets | 35 |
| Fortifications mentioned in "The Star-Spangled Banner" | 64 |
| Fortifications in "The Star-Spangled Banner" | 54 |
| Fortifications | 14 |
| Fortification ledge | 19 |
| Fortification for files? | 24 |
| Fortification ditch | 19 |
| Fortification about four feet high | 34 |
| Fortification | 13 |
| Forties' first lady | 23 |
| Forties Maple Leaf, Bobby ______ | 32 |
| Forthwith, to physicians | 24 |
| Forthwith | 9 |
| Forthrightness | 14 |
| Forthrightly | 12 |
| Forthright fellow | 17 |
| Forthright | 10 |
| Forthcoming: abbr. | 18 |
| Forthcoming psych book | 22 |
| Forthcoming | 11 |
| Forth's opposite | 20 |
| Forth partner | 13 |
| Forth or Clyde | 14 |
| Forth feeder | 12 |
| Forth | 5 |
| Fortes | 6 |
| Fortensky's ex | 18 |
| Fortensky and Warner, to Liz Taylor | 35 |
| Forte, so to speak | 18 |
| Forte, in music | 15 |
| Forte's opposite | 20 |
| Forte's musical antithesis | 30 |
| Forte or Harris of football | 27 |
| Forte of William Meredith | 25 |
| Forte of William Allen White | 28 |
| Forte of the Vienna Riding School | 33 |
| Forte of the Redskins | 21 |
| Forte of the deaf | 17 |
| Forte of the 10-o'clock scholar | 35 |
| Forte of S. E. Morison | 22 |
| Forte of Oscar Hammerstein II | 29 |
| Forte of O. Henry | 17 |
| Forte of Niels Bohr | 19 |
| Forte of Mr. Chips | 18 |
| Forte of Keats or Shelley | 25 |
| Forte of Joseph Turner | 22 |
| Forte of Johnson and Masters | 28 |
| Forte of Isocrates | 18 |
| Forte of interpreters who help the hearing impaired in court (abbr.) | 68 |
| Forte of football fame | 22 |
| Forte of Flavor-Flav | 20 |
| Forte of Flavor Flav | 20 |
| Forte of Fingers | 16 |