| FAULTLINES | • faultlines n. Plural of faultline. • fault-lines n. Plural of fault-line. • fault␣lines n. Plural of fault line. |
| FELLATIONS | • fellations n. Plural of fellation. • FELLATION n. oral stimulation of the penis, also FELLATIO. |
| FERNALLIES | • FERNALLY n. a vascular flowerless plant, a pteridophyte, other than a fern. |
| FILIALNESS | • filialness n. Quality of being filial. • FILIALNESS n. the state of being filial. |
| FILLIPEENS | • fillipeens n. Plural of fillipeen. • FILLIPEEN n. (US) a game in which each of two players eats a twin kernel of a nut, also PHILIPPINA, PHILIPPINE, PHILOPENA, PHILOPOENA. |
| FLAGELLINS | • flagellins n. Plural of flagellin. • FLAGELLIN n. a polymeric protein that is the chief constituent of bacterial flagella. |
| FLATLINERS | • flatliners n. Plural of flatliner. • FLATLINER n. one who flatlines. |
| FLEDGLINGS | • fledglings n. Plural of fledgling. • FLEDGLING n. a young bird just fledged, also FLEDGELING. |
| FLESHLINGS | • fleshlings n. Plural of fleshling. • FLESHLING n. a sensualist. |
| FRILLINESS | • frilliness n. The quality of being frilly. • FRILLINESS n. the state of being frilly. |
| LINENFOLDS | • linenfolds n. Plural of linenfold. • LINENFOLD n. a representation of linen laid in vertical folds, of Flemish origin in the 15th century and used by Tudor woodcarvers, mainly for decorating panelling, doors, and chests. |
| NULLIFIERS | • nullifiers n. Plural of nullifier. • NULLIFIER n. one who nullifies or makes void; one who maintains the right to nullify a contract by one of the parties. |
| SDEIGNFULL | • SDEIGNFULL adj. (obsolete) disdainful. |
| SILDENAFIL | • sildenafil n. (Pharmacology) A drug that is used in the form of its citrate C22H30N6O4S·C6H8O7 to treat erectile dysfunction… • SILDENAFIL n. a drug used to enhance erectile function. |
| WILFULNESS | • wilfulness n. (British spelling) The state or condition of being wilful; stubbornness. • WILFULNESS n. the state of being wilful, also WILLFULNESS. |
| YELLOWFINS | • yellowfins n. Plural of yellowfin. • YELLOWFIN n. a kind of tuna with yellowish fins. |