| FLATTEROUSLY | • FLATTEROUS adv. (archaic) flattering. |
| FLUIDEXTRACT | • fluidextract n. Dated form of fluid extract. • FLUIDEXTRACT n. an alcohol preparation of a plant-derived drug containing the active constituents of one gram of the dry drug in each milliliter. |
| FLUORAPATITE | • fluorapatite n. (Mineralogy) A calcium halophosphate mineral, in which fluoride replaces the hydroxide of apatite, that… • FLUORAPATITE n. a mineral consisting of calcium phosphate fluoride, the most common form of apatite. |
| FLUSTRATIONS | • FLUSTRATION n. (obsolete) flustering. |
| FLUTTERBOARD | • flutterboard n. (US) A buoyancy board made of foam, used to support the body when in water. • FLUTTERBOARD n. a kind of swimming aid, a kickboard. |
| FUTILITARIAN | • futilitarian adj. Having the opinion that all human activity is futile. • futilitarian n. A person believing that all human activity is futile. • futilitarian n. A person devoted to profitless pursuits. |
| GRATEFULLEST | • gratefullest adj. Superlative form of grateful: most grateful. • GRATEFUL adj. deeply thankful. |
| INTERFACULTY | • interfaculty adj. Between faculties. • INTERFACULTY adj. between faculties. |
| MULTIFACTORS | Sorry, definition not available. |
| MULTIFEATURE | • multifeature adj. Having multiple features. |
| REFUTABILITY | • refutability n. The ability to be refuted; disprovability. • REFUTABILITY n. the quality of being refutable. |
| ULTRAFILTERS | • ultrafilters n. Plural of ultrafilter. • ULTRAFILTER v. to pass through an ultrafilter. |
| ULTRALEFTISM | • ultraleftism n. Ultraleft beliefs generally. • ULTRALEFTISM n. support of the extreme left. |
| ULTRALEFTIST | • ultraleftist n. A person of ultraleft politics. • ULTRALEFTIST n. one who supports the extreme Left. |
| UNFLATTERING | • unflattering adj. Not flattering. • unflattering v. Present participle of unflatter. • UNFLATTERING adj. not flattering. |