| FERRUGINOUS | • ferruginous adj. Containing iron. • ferruginous adj. Rusty. • ferruginous adj. Rust-colored. |
| FRUCTUATION | • fructuation n. (Archaic) produce; fruit. • FRUCTUATION n. coming to fruit or bearing of fruit. |
| FULGURATION | • fulguration n. A flash of lightning. • fulguration n. (Medicine) cauterization with electricity; electrocautery. • fulguration n. (Chemistry, obsolete) The sudden brightening of a fused globule of gold or silver, when the last film… |
| FURIOUSNESS | • furiousness n. The state or quality of being furious or outraged; enragement; inflamedness. • FURIOUSNESS n. the state of being furious. |
| FURLOUGHING | • furloughing v. Present participle of furlough. • FURLOUGH v. to grant a leave of absence to. |
| FUTURITIONS | • FUTURITION n. future existence; time to come. |
| GUANIFEROUS | • guaniferous adj. Yielding guano. • GUANIFEROUS adj. bearing guano. |
| INFRUCTUOUS | • infructuous adj. (Obsolete or Pakistan, India) Not fruitful. • INFRUCTUOUS adj. not fruitful. |
| INTERFLUOUS | • interfluous adj. Alternative form of interfluent. • INTERFLUOUS adj. flowing between or together, also INTERFLUENT. |
| MICROFUNGUS | • microfungus n. A fungus of microscopic size. • MICROFUNGUS n. a very small fungus. |
| OUTFIGURING | • outfiguring v. Present participle of outfigure. • OUTFIGURE v. to surpass in figuring. |
| SULFURATION | • sulfuration n. (Chemistry) reaction with sulfur. • SULFURATION n. the process of treating with sulfur, also SULPHURATION. |
| SUPERFUSION | • superfusion n. (Medicine) The continuous flowing of a sustaining fluid over the outside of an isolated organ. • SUPERFUSION n. the act of superfusing. |
| UNFAVOURITE | • unfavourite v. Alternative form of unfavorite. • UNFAVOURITE adj. not favourite or favoured. |
| UNFRIVOLOUS | • unfrivolous adj. Not frivolous. • UNFRIVOLOUS adj. not frivolous. |
| URINIFEROUS | • uriniferous adj. Conveying urine. • URINIFEROUS adj. bearing urine. |