| AGROFORESTER | • agroforester n. One who takes part in agroforestry. • AGROFORESTER n. one who practices agroforestry. |
| ELECTROFORMS | • electroforms v. Third-person singular simple present indicative form of electroform. • ELECTROFORM v. to form (shaped articles) by electrodeposition on a mold. |
| FEMTOSECONDS | • femtoseconds n. Plural of femtosecond. • FEMTOSECOND n. one quadrillionth part of a second. |
| FESTOONERIES | • festooneries n. Plural of festoonery. • FESTOONERY n. festoons collectively. |
| FETOPROTEINS | • fetoproteins n. Plural of fetoprotein. • FETOPROTEIN n. any of several fetal antigens present in the adult in some abnormal conditions. |
| FLUOROMETERS | • fluorometers n. Plural of fluorometer. • FLUOROMETER n. an instrument for measuring fluorescence, also FLUORIMETER. |
| FOETOSCOPIES | • foetoscopies n. Plural of foetoscopy. • FOETOSCOPY n. a procedure for viewing the fetus directly, within the uterus, also FETOSCOPY. |
| FOOTBALLENES | • FOOTBALLENE n. buckminsterfullerene, a ball-shaped molecule containing 60 carbon atoms linked together in hexagons and pentagons to form a closed, near spherical and very stable structure. |
| FOOTLESSNESS | • footlessness n. The state or condition of being footless. • FOOTLESSNESS n. the state of being footless. |
| FOOTSORENESS | • footsoreness n. The characteristic of being footsore. • FOOTSORENESS n. the state of being footsore. |
| FOOTWEARIEST | • FOOTWEARY adj. weary from walking. |
| FORESHORTENS | • foreshortens v. Third-person singular simple present indicative form of foreshorten. • FORESHORTEN v. to shorten by proportionately contracting in the direction of depth so that an illusion of projection or extension in space is obtained. |
| FREEBOOTINGS | • FREEBOOTING n. piracy. |
| HEADFOREMOST | • headforemost adv. Headfirst. • HEADFOREMOST adv. headfirst. |
| LOOSESTRIFES | • loosestrifes n. Plural of loosestrife. • LOOSESTRIFE n. a wild flower of the primrose family. |
| PROFESSORATE | • professorate n. Professorship. • PROFESSORATE n. the office of a professor. |
| PROFITEROLES | • profiteroles n. Plural of profiterole. • PROFITEROLE n. (French) a small puff of choux pastry, usually filled with cream and covered with a chocolate sauce. |
| SINGLEFOOTED | • singlefooted v. Simple past tense and past participle of singlefoot. |
| SUREFOOTEDLY | • surefootedly adv. In a surefooted manner. • SUREFOOTED adv. not given to stumbling. |
| TOMFOOLERIES | • tomfooleries n. Plural of tomfoolery. • TOMFOOLERY n. playful or foolish behavior. |