| ASTROFELLS | • ASTROFELL n. (Spenser) an unidentified bitter starlike plant, possibly aster, also ASTROPHEL. |
| EFFORTLESS | • effortless adj. Without effort. • EFFORTLESS adj. showing or requiring little or no effort. |
| FLAVORISTS | • flavorists n. Plural of flavorist. • FLAVORIST n. a person who creates flavourings for drinks, perfumes, etc., also FLAVOURIST. |
| FLORISTICS | • floristics n. (Botany) The scientific study of the distribution of plants, especially on the regional level. • FLORISTICS n. the study of the numerical distributions of plants. |
| FLYPOSTERS | • flyposters n. Plural of flyposter. • fly-posters n. Plural of fly-poster. • FLYPOSTER n. one who engages in FLYPOSTING. |
| FORESTALLS | • forestalls v. Third-person singular simple present indicative form of forestall. • FORESTALL v. to prevent. |
| FORESTLESS | • forestless adj. Without a forest. • FORESTLESS adj. without a forest. |
| FORMALISTS | • formalists n. Plural of formalist. • FORMALIST n. a person having exaggerated regard to rules or established usages. |
| FORMULISTS | • formulists n. Plural of formulist. • FORMULIST n. one who depends excessively on formulae. |
| FRONTLISTS | • frontlists n. Plural of frontlist. • FRONTLIST n. a list of books about to be published. |
| FROSTLINES | • frostlines n. Plural of frostline. • frost␣lines n. Plural of frost line. • FROSTLINE n. the depth to which the ground freezes in winter. |
| PROFILISTS | • profilists n. Plural of profilist. • PROFILIST n. one who draws profiles, also PROFILER. |
| PROFITLESS | • profitless adj. Not yielding profit. • PROFITLESS adj. without profit. |
| SHORTFALLS | • shortfalls n. Plural of shortfall. • short-falls n. Plural of short-fall. • SHORTFALL n. the fact or amount of falling short. |
| SOLFATARAS | • solfataras n. Plural of solfatara. • SOLFATARA n. (Italian) a volcanic vent emitting only gases. |