| FAULTLINE | • faultline n. Alternative spelling of fault line. • fault-line n. Alternative spelling of fault line. • fault␣line n. (Geology) The line formed by the intersection of the plane of a fault with the surface of the Earth. |
| FELLATING | • fellating v. Present participle of fellate. • FELLATE v. to stimulate the penis orally. |
| FELLATION | • fellation n. Alternative form of fellatio. • FELLATION n. oral stimulation of the penis, also FELLATIO. |
| FELLATIOS | • fellatios n. Plural of fellatio. • FELLATIO n. oral stimulation of the penis, also FELLATION. |
| FELLATRIX | • fellatrix n. A woman who performs fellatio. • FELLATRIX n. a female who fellates. |
| FILTRABLE | • filtrable adj. Alternative form of filterable. • FILTRABLE adj. capable of being filtered, also FILTERABLE. |
| FLATLINED | • flatlined v. Simple past tense and past participle of flatline. • FLATLINE v. to register as having no brain waves or heartbeat. |
| FLATLINER | • flatliner n. (Rare) A patient with no heartbeat. • FLATLINER n. one who flatlines. |
| FLATLINES | • flatlines v. Third-person singular simple present indicative form of flatline. • flat␣lines n. Plural of flat line. • FLATLINE v. to register as having no brain waves or heartbeat. |
| FLATLINGS | • flatlings adv. (Scotland) Alternative form of flatling. • FLATLINGS adv. (Spenser) with a flat side or edge, also FLATLING, FLATLONG. |
| FLAUNTILY | • flauntily adv. In a flaunty manner. • FLAUNTY adv. showy. |
| FLOPTICAL | • floptical adj. (Computing, data storage) Using a combination of magnetic and optical technology. • floptical n. A floptical disk. • FLOPTICAL n. a type of read-write head using a laser device. |
| FLOTILLAS | • flotillas n. Plural of flotilla. • FLOTILLA n. a fleet of ships. |
| FOLIOLATE | • foliolate adj. Of or pertaining to leaflets of a plant. • FOLIOLATE adj. composed of or relating to leaflets, also FOLIOLOSE. |
| NIGHTFALL | • nightfall n. The close of the day; the coming of night. • NIGHTFALL n. the onset or beginning of the night. |
| PLAINTFUL | • plaintful adj. (Obsolete) complaining; expressing sorrow audibly. • PLAINTFUL adj. (archaic) complaining, also PLAINFUL. |
| TADALAFIL | • tadalafil n. (Pharmacology) A drug, C22H19N3O4, that is used to treat erectile dysfunction and benign prostatic hyperplasia… • TADALAFIL n. a drug used to treat erectile dysfunction and benign prostatic hyperplasia. |
| TAILFLIES | • TAILFLY n. part of a fishing fly which resembles the tail of an insect. |