| Flu ___ (autumn offerings) | 26 |
| Flubbed one's lines | 23 |
| Fluctuate in intensity | 22 |
| Fluctuating marketplace | 23 |
| Fluctuation of musical tempo | 28 |
| Fluent in a common tongue | 25 |
| Fluent in a Germanic tongue | 27 |
| Fluent speakers avoid them | 26 |
| Fluff found in pockets | 22 |
| Fluff one's feathers | 24 |
| Fluff stuff, in CB lingo | 24 |
| Fluffs (up), as a pillow | 24 |
| Fluffy ball, when doubled | 25 |
| Fluffy chocolate dessert | 24 |
| Fluffy lap dog, for short | 25 |
| Fluffy little dog, for short | 28 |
| Fluffy toy dog, familiarly | 26 |
| Flugelhorn's cousin | 23 |
| Flugelhorns' cousins | 24 |
| Fluid collection problem | 24 |
| Fluid dynamics phenomena | 24 |
| Fluid dynamics phenomenon | 25 |
| Fluid for a cartoonist | 22 |
| Fluid in some pens, to a pig? | 29 |
| Fluid in Zeus's veins | 25 |
| Fluid movement process | 22 |
| Fluid resembling blood plasma | 29 |
| Fluid that absorbs fats | 23 |
| Fluid-containing pouches | 24 |
| Fluid-filled container | 22 |
| Fluid-filled structure | 22 |
| Fluid-injecting device | 22 |
| Fluidless, as a barometer | 25 |
| Fluke: "___ Bomb" | 27 |
| Flummox Helen on a movie set? | 29 |
| Flunk out at derring-do | 23 |
| Flunky on a movie set, e.g. | 27 |
| Flunky's expected reply | 27 |
| Fluorescence trademark | 22 |
| Fluorescent bulb filler | 23 |
| Fluorescent lamp filler | 23 |
| Fluorescent pigment brand | 25 |
| Fluorescent-lamp filler | 23 |
| Fluoride-in-water meas. | 23 |
| Fluorine's atomic number | 28 |
| Fluorine/carbon compound | 24 |
| Fluoroscopist's aid | 23 |
| Flushed, as the cheeks | 22 |
| Flushing Bay airport letters | 28 |
| Flushing Meadow stadium name | 28 |
| Flushing Meadows exposition | 27 |
| Flushing Meadows initials | 25 |
| Flushing Meadows stadium | 24 |
| Flustered, and then some | 24 |
| Flute competition, e.g.? | 24 |
| Flute legend Jean-Pierre | 24 |
| Flute or saxophone variety | 26 |
| Flute's bulbous relative | 28 |
| Flute's finger holes | 24 |
| Flute's kid brother | 23 |
| Flute's little kin | 22 |
| Flutes, fifes and piccolos | 26 |
| Flutie's league, once | 25 |
| Flutist's embellishment | 27 |
| Flutter or sway loosely | 23 |
| Flutter the eyelids, say | 24 |
| Flutter, as an eyelash | 22 |
| Flutter, as one's eyes | 26 |
| Fluttered in the breeze | 23 |
| Flutters, as eyelashes | 22 |
| Fly a plane alone, say | 22 |
| Fly around like a moth | 22 |
| Fly around the Kalahari | 23 |
| Fly around the tropics? | 23 |
| Fly ball chaser's cry | 25 |
| Fly ball fielder's shout | 28 |
| Fly ball's antithesis | 25 |
| Fly catcher's call | 22 |
| Fly catchers, at times | 22 |
| Fly close to the ground | 23 |
| Fly fisherman's concern | 27 |
| Fly fisherman's fly | 23 |
| Fly fisherman's fly, e.g. | 29 |
| Fly fisherman's lube? | 25 |
| Fly fishers' lures | 23 |
| Fly in the African savanna | 26 |
| Fly in the ointment, e.g. | 25 |
| Fly into the wild blue yonder | 29 |
| Fly into ___ (become furious) | 29 |
| Fly lightly and rapidly | 23 |
| Fly lightly and swiftly | 23 |
| Fly like a flying saucer | 24 |
| Fly of the genus Glossina | 25 |
| Fly off the handle, e.g. | 24 |
| Fly on a hook, perhaps | 22 |
| Fly on a hook, to bass | 22 |
| Fly on the river, perhaps | 25 |
| Fly or worm, on occasion | 24 |
| Fly over the beach, maybe | 25 |
| Fly swatter's target | 24 |