| ENSIFORM | • ensiform adj. Shaped like a sword blade. • ENSIFORM adj. in botany, sword-shaped. |
| FEMITERS | • FEMITER n. (Shakespeare) a plant once used to treat scurvy, also FUMITORY, FEMETARY, FENITAR. |
| FERMIONS | • fermions n. Plural of fermion. • FERMION n. a type of subatomic particle. |
| FERMIUMS | • FERMIUM n. a radioactive element. |
| FIREARMS | • firearms n. Plural of firearm. • fire␣arms n. Plural of fire arm. • FIREARM n. a weapon e.g. a gun. |
| FIRMLESS | • firmless adj. (Obsolete) Detached from physical substance. • firmless adj. (Obsolete) Infirm; unstable. • FIRMLESS adj. (obsolete) wavering. |
| FIRMNESS | • firmness n. The state of being firm. • FIRMNESS n. the state of being firm. |
| FLIMSIER | • flimsier adj. Comparative form of flimsy: more flimsy. • FLIMSY adj. lacking strength. |
| FREMITUS | • fremitus n. A vibration which is perceptible on palpation or auscultation. • FREMITUS n. (Latin) a vibration capable of being felt. |
| MISFARED | • misfared v. Simple past tense and past participle of misfare. • MISFARE v. (Spenser) to fare badly. |
| MISFARES | • misfares v. Third-person singular simple present indicative form of misfare. • MISFARE v. (Spenser) to fare badly. |
| MISFIRED | • misfired v. Simple past tense and past participle of misfire. • MISFIRE v. to fail to fire. |
| MISFIRES | • misfires n. Plural of misfire. • misfires v. Third-person singular simple present indicative form of misfire. • MISFIRE v. to fail to fire. |
| MISFRAME | • misframe v. To frame wrongly. • MISFRAME v. to frame badly. |
| MISINFER | • misinfer v. (Transitive, intransitive) To infer incorrectly. • MISINFER v. to infer wrongly. |
| MISREFER | • misrefer v. To refer incorrectly. • MISREFER v. to refer incorrectly. |
| RAMIFIES | • ramifies v. Third-person singular simple present indicative form of ramify. • RAMIFY v. to divide into branches. |
| RIMFIRES | • rimfires n. Plural of rimfire. • RIMFIRE n. a cartridge having the primer set in the rim of the shell. |
| SETIFORM | • setiform adj. Having the shape or structure of bristles. • SETIFORM adj. having the form of a seta. |