| FLAMEOUTS | • flameouts n. Plural of flameout. • flame-outs n. Plural of flame-out. • FLAMEOUT n. a failure of a jet engine in flight. |
| FLUMMOXES | • flummoxes v. Third-person singular simple present indicative form of flummox. • FLUMMOX v. to confuse. |
| FORMULARS | • FORMULAR n. a model or set form. |
| FORMULISE | • formulise v. Alternative form of formulize. • FORMULISE v. to express in a formula, also FORMULIZE. |
| FORMULISM | • formulism n. An over-reliance on, or adherence to formulae. • FORMULISM n. excessive use of, or dependence on, formulae. |
| FORMULIST | • formulist n. One who exhibits an excessive reliance on, or adherence to, formulae. • FORMULIST n. one who depends excessively on formulae. |
| FOULMARTS | • foulmarts n. Plural of foulmart. • FOULMART n. a polecat, also FOUMART. |
| FULMINOUS | • fulminous adj. Explosive. • fulminous adj. (Figurative) furious. • FULMINOUS adj. relating to thunder and lightning, also FULMINEOUS. |
| FULSOMELY | • fulsomely adv. In a fulsome manner. • FULSOME adv. cloying. |
| FULSOMEST | • fulsomest adj. Superlative form of fulsome: most fulsome. • FULSOME adj. cloying. |
| FUMAROLES | • fumaroles n. Plural of fumarole. • FUMAROLE n. a hole which emits volcanic vapours, also FUMEROLE. |
| FUMEROLES | • fumeroles n. Plural of fumerole. • FUMEROLE n. a hole in a volcanic region from which hot gases and vapors issue, also FUMAROLE. |
| MOFUSSILS | • mofussils n. Plural of mofussil. • MOFUSSIL n. (Urdu) in India, the rural localities of a district as distinguished from the chief station or the town. |
| MOLESTFUL | • molestful adj. (Obsolete) troublesome; vexatious. • MOLESTFUL adj. troublesome, vexatious. |
| MONOFUELS | • monofuels n. Plural of monofuel. • MONOFUEL n. a type of rocket propellant. |
| MOUFFLONS | • moufflons n. Plural of moufflon. • MOUFFLON n. (French) a Corsican wild sheep, also MOUFLON, MUFLON, MUSIMON, MUSMON. |
| MOUTHFULS | • mouthfuls n. Plural of mouthful. • MOUTHFUL n. as much as a mouth can hold. |
| SULFONIUM | • sulfonium n. (Inorganic chemistry) the univalent H3S+ cation, derived from sulfane. • sulfonium n. (Organic chemistry) any derivative of this cation in which one or more hydrogen atoms are replaced by… • SULFONIUM n. the positively charged group SH3, its salts or derivatives, also SULPHONIUM. |