| FEMTOSECONDS | • femtoseconds n. Plural of femtosecond. • FEMTOSECOND n. one quadrillionth part of a second. |
| FESTOONERIES | • festooneries n. Plural of festoonery. • FESTOONERY n. festoons collectively. |
| FOETOSCOPIES | • foetoscopies n. Plural of foetoscopy. • FOETOSCOPY n. a procedure for viewing the fetus directly, within the uterus, also FETOSCOPY. |
| FOOTLESSNESS | • footlessness n. The state or condition of being footless. • FOOTLESSNESS n. the state of being footless. |
| FOOTSLOGGERS | • footsloggers n. Plural of footslogger. • FOOTSLOGGER n. a soldier serving on foot. |
| FOOTSORENESS | • footsoreness n. The characteristic of being footsore. • FOOTSORENESS n. the state of being footsore. |
| 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. |
| FORESTATIONS | • forestations n. Plural of forestation. • FORESTATION n. the creation of forest. |
| FORETOPMASTS | • foretopmasts n. Plural of foretopmast. • FORETOPMAST n. the mast above the foretop platform. |
| LOOSESTRIFES | • loosestrifes n. Plural of loosestrife. • LOOSESTRIFE n. a wild flower of the primrose family. |
| PHOTOFLASHES | • photoflashes n. Plural of photoflash. • PHOTOFLASH n. a photographic flash. |
| POSTMODIFIES | • postmodifies v. Third-person singular simple present indicative form of postmodify. • POSTMODIFY v. to modify the sense of (a word or phrase) by being placed after it. |
| PROFESSORATE | • professorate n. Professorship. • PROFESSORATE n. the office of a professor. |
| PROFESSORIAT | • professoriat n. Professors in general. • PROFESSORIAT n. the body of college and university teachers at an institution or in society, also PROFESSORIATE. |
| PUSSYFOOTERS | • pussyfooters n. Plural of pussyfooter. • PUSSYFOOTER n. one who pussyfoots. |
| TEASPOONFULS | • teaspoonfuls n. Plural of teaspoonful. • TEASPOONFUL n. the contents of a teaspoon. |
| TEASPOONSFUL | • teaspoonsful n. Plural of teaspoonful. • TEASPOONFUL n. the contents of a teaspoon. |
| TOPLOFTINESS | • toploftiness n. The quality of being toplofty. • TOPLOFTINESS n. the state of being toplofty, high and mighty. |