| CLASSIFY | • classify v. To identify by or divide into classes; to categorize. • classify v. To declare something a secret, especially a government secret. • classify v. To make classy. |
| FISHEYES | • fisheyes n. Plural of fisheye. • fish␣eyes n. Plural of fish eye. • FISHEYE n. a suspicious stare. |
| FISHWAYS | • fishways n. Plural of fishway. • FISHWAY n. a device for enabling fish to pass around a dam. |
| FLOSSILY | • flossily adv. In a flossy manner. • FLOSSY adv. resembling a light soft fibre. |
| FLYPASTS | • flypasts n. Plural of flypast. • FLYPAST n. a flight, at low altitude or close range, also FLYBY. |
| FLYSCHES | • flysches n. Plural of flysch. • FLYSCH n. (German) a great Alpine mass of Cretaceous and Lower Tertiary sandstone with shales. |
| FOGYISMS | • fogyisms n. Plural of fogyism. • FOGYISM n. an outlook like a fogy, also FOGEYISM. |
| FORESAYS | • foresays v. Third-person singular simple present indicative form of foresay. • FORESAY v. to foretell. |
| FYNBOSES | • FYNBOS n. (South African) in South Africa, an area of low shrubs. |
| GLASSIFY | • glassify v. (Transitive) Synonym of vitrify: to convert a silica-bearing material to a glasslike substance by applying heat. • glassify v. (Transitive) To the convert sand or soil of (a particular geographic area) to a glasslike state using… • glassify v. (Transitive) To convert (radioactive waste) into a glasslike substance for long-term storage. |
| SKYSURFS | • SKYSURF v. to perform maneuvers during free fall while riding on a skyboard. |
| SYNFUELS | • synfuels n. Plural of synfuel. • SYNFUEL n. a fuel derived from fossil fuels. |