| CALEFIES | • calefies v. Third-person singular simple present indicative form of calefy. • CALEFY v. to make warm or hot. |
| FASCICLE | • fascicle n. A bundle or cluster. • fascicle n. (Anatomy) A bundle of skeletal muscle fibers surrounded by connective tissue. • fascicle n. (Botany) A cluster of flowers or leaves, such as the bundles of the thin leaves (or needles) of pines. |
| FASCIOLE | • fasciole n. (Zoology) A band of minute tubercles, bearing modified spines, on the shells of spatangoid sea urchins. • FASCIOLE n. (Latin) a band of colour, also FASCIOLA. |
| FELICIAS | • felicias n. Plural of felicia. • FELICIA n. any member of a South African genus of herbs. |
| FELSITIC | • felsitic adj. Relating to, or containing, felsite. • FELSITIC adj. having quartz and feldspar mixed, also FELSIC. |
| FICKLEST | • ficklest adj. Superlative form of fickle: most fickle. • FICKLE adj. not loyal. |
| FILACERS | • filacers n. Plural of filacer. • FILACER n. an officer who files writs, also FILAZER. |
| FILCHERS | • filchers n. Plural of filcher. • FILCHER n. someone who filches. |
| FLEECIES | • FLEECIE n. (New Zealand) someone who collects fleeces in a shearing shed. |
| FLICKERS | • flickers n. Plural of flicker. • flickers v. Third-person singular simple present indicative form of flicker. • Flickers prop.n. Plural of Flicker. |
| FLINCHES | • flinches v. Third-person singular simple present indicative form of flinch. • FLINCH v. to shrink back involuntarily. |
| FLITCHES | • flitches n. Plural of flitch. • FLITCH v. to cut into strips. |
| FLUERICS | • fluerics n. A subfield of fluidics, dealing with fluid components that perform functions not requiring the use of moving parts. • FLUERICS n. the technology of using fluid jets analogously to electricity, also FLUIDICS. |
| FOCALISE | • focalise v. Alternative spelling of focalize. • FOCALISE v. to focus, also FOCALIZE. |
| FUNICLES | • funicles n. Plural of funicle. • FUNICLE n. a cordlike anatomical structure. |
| ICEFALLS | • icefalls n. Plural of icefall. • ICEFALL n. a steep part of a glacier resembling a frozen waterfall. |
| INFLECTS | • inflects v. Third-person singular simple present indicative form of inflect. • INFLECT v. to bend or curve inwards. |
| LUCIFERS | • lucifers n. Plural of lucifer. • LUCIFER n. a friction match. |