| ___ flash | 9 |
| ___ flash (immediately) | 23 |
| ___ flask (inspiration for the Thermos) | 39 |
| ___ flask (lab container) | 25 |
| ___ flask (liquor container) | 28 |
| ___ flask (thermos prototype) | 29 |
| ___ Flatts | 10 |
| ___ Fleck and the Flecktones | 28 |
| ___ Fleischer, who was known as Mr. Boxing | 42 |
| ___ Fleming, central character in "The Red Badge of Courage" | 70 |
| ___ flies | 9 |
| ___ flint (go to any lengths) | 29 |
| ___ Flite (bicycle brand) | 25 |
| ___ florentine | 14 |
| ___ floss | 9 |
| ___ flottante (French dessert) | 30 |
| ___ flour | 9 |
| ___ Flow | 8 |
| ___ Flow (body of water in the Orkney Islands) | 46 |
| ___ Flow (British naval base site) | 34 |
| ___ Flow (naval base) | 21 |
| ___ Flow (Orkneys sea basin) | 28 |
| ___ Flow (W.W. II naval base) | 29 |
| ___ Flow, area off Scotland | 27 |
| ___ Flow, basin off Scotland | 28 |
| ___ Flow, British naval base | 28 |
| ___ flower (potato vine) | 24 |
| ___ Flowers, 1926–31 middleweight champ | 46 |
| ___ flu | 7 |
| ___ fluid | 9 |
| ___ flush | 9 |
| ___ flush (highest poker hand) | 30 |
| ___ flute (organ stop) | 22 |
| ___ Flux (Charlize Theron role) | 31 |
| ___ fly | 7 |
| ___ fly (baseball play) | 23 |
| ___ fly (certain baseball hit, for short) | 41 |
| ___ fly (R.B.I. producer) | 25 |
| ___ fly (RBI earner) | 20 |
| ___ fly (RBI getter) | 20 |
| ___ fly (RBI method) | 20 |
| ___ fly (RBI-scoring out) | 25 |
| ___ fly (run producer) | 22 |
| ___ fly (run-scoring out) | 25 |
| ___ fly (run-scoring out, briefly) | 34 |
| ___ fly balls | 13 |
| ___ Flynn Boyle | 15 |
| ___ Flynn Boyle ("The Practice" actress) | 50 |
| ___ Flynn Boyle of "The Practice" | 43 |
| ___ Flynn Boyle of "Twin Peaks" | 41 |
| ___ fog | 7 |
| ___ Fogle, spokesman for Subway | 31 |
| ___ foi (sincerity, in Sedan) | 29 |
| ___ foie gras | 13 |
| ___ foil | 8 |
| ___ fois (many a time): Fr. | 27 |
| ___ fois (once, in Paris) | 25 |
| ___ fois que (as soon as, in Arles) | 35 |
| ___ folder | 10 |
| ___ follicle | 12 |
| ___ Folly | 9 |
| ___ Folly (Alaska nickname) | 27 |
| ___ Folly (Alaska) | 18 |
| ___ Fonck, top Allied fighter ace of W.W. I | 43 |
| ___ fond farewell to | 20 |
| ___ Fong of "Hawaii Five-O" | 37 |
| ___ foo young | 13 |
| ___ foo yung | 12 |
| ___ food | 8 |
| ___ Food (Ben & Jerry's flavor named after a band) | 58 |
| ___ food (chicken tikka masala, saag paneer, et al.) | 52 |
| ___ food movement | 17 |
| ___ Foods | 9 |
| ___ Foods (Little Debbie cakes company) | 39 |
| ___ Foods, Fortune 500 company | 30 |
| ___ Foods, Inc. | 15 |
| ___ fool (be silly) | 19 |
| ___ fool (clown around) | 23 |
| ___ fool (goof off) | 19 |
| ___ fool of (dupe) | 18 |
| ___ Fools' Day | 18 |
| ___ foot | 8 |
| ___ foot oil | 12 |
| ___ football | 12 |
| ___ football (indoor game) | 26 |
| ___ football (indoor sport) | 27 |
| ___ Football Conference | 23 |
| ___ Football Talk (sports blog) | 31 |
| ___ for "victory" | 27 |
| ___ for (be attracted to) | 25 |
| ___ for (chooses) | 17 |
| ___ for (defend) | 16 |
| ___ for (defends) | 17 |
| ___ for (doomed) | 16 |
| ___ for (exquisite) | 19 |
| ___ for (favor) | 15 |
| ___ for (highly desirable) | 26 |
| ___ for (not wanted) | 20 |
| ___ for (permit) | 16 |
| ___ for (really delicious) | 26 |