| DEFLAGRATIONS | • deflagrations n. Plural of deflagration. • DEFLAGRATION n. the rapid burning away of anything in a destructive fire. |
| DESULFURATING | • desulfurating v. Present participle of desulfurate. • DESULFURATE v. to remove the sulphur from. |
| FATIGABLENESS | • fatigableness n. Susceptibility to fatigue. • FATIGABLE n. easily tired, also FATIGUABLE. |
| FILIBUSTERING | • filibustering v. Present participle of filibuster. • filibustering n. The act of one who filibusters. • FILIBUSTERING n. obstructing legislation by making long speeches. |
| FLAGELLANTISM | • flagellantism n. The act of whipping oneself, typically for religious penance or for sexual excitement. • FLAGELLANTISM n. the practice of whipping oneself or another. |
| FLAGELLATIONS | • flagellations n. Plural of flagellation. • FLAGELLATION n. the act or practice of flagellating. |
| FLIGHTINESSES | • flightinesses n. Plural of flightiness. • FLIGHTINESS n. the state of being flighty. |
| FLUGELHORNIST | • flugelhornist n. One who plays the flugelhorn. • FLUGELHORNIST n. one who plays the flugelhorn. |
| FORESTALLINGS | • forestallings n. Plural of forestalling. • FORESTALLING n. the act of forestalling. |
| FORETRIANGLES | • foretriangles n. Plural of foretriangle. • FORETRIANGLE n. the triangular area formed by the deck, foremast, and headstay of a sailing vessel. |
| FORGETFULNESS | • forgetfulness n. The quality of being forgetful; proneness to let slip from the mind. • forgetfulness n. Loss of remembrance or recollection; a ceasing to remember; oblivion. • forgetfulness n. Failure to bear in mind; careless omission; inattention. |
| FORTNIGHTLIES | • fortnightlies n. Plural of fortnightly. • FORTNIGHTLY n. a publication appearing once every two weeks. |
| FRIGHTFULNESS | • frightfulness n. The quality of being frightful. • FRIGHTFULNESS n. the state of being frightful. |
| FUNGIBILITIES | • fungibilities n. Plural of fungibility. • FUNGIBILITY n. the state of being fungible. |
| GENUFLECTIONS | • genuflections n. Plural of genuflection. • GENUFLECTION n. the act of bending the knee, also GENUFLEXION. |
| LIGHTFASTNESS | • lightfastness n. The quality or degree of being lightfast. • LIGHTFAST n. of a fabric, that doesn't fade on exposure to light. |
| POWERLIFTINGS | • POWERLIFTING n. the sport of weightlifting. |
| REGRETFULNESS | • regretfulness n. The state or condition of being regretful. • REGRETFUL n. full of regret. |
| SINGLEFOOTING | • singlefooting v. Present participle of singlefoot. |
| WATERFOWLINGS | • WATERFOWLING n. the sport of shooting waterfowl. |