| FANTASTS | • fantasts n. Plural of fantast. • FANTAST n. an impractical person, also PHANTAST. |
| FATTISMS | • FATTISM n. discrimination against fat people. |
| FATTISTS | • fattists n. Plural of fattist. • FATTIST n. someone who discriminates thus. |
| FESTIEST | • FESTY adj. (Australian slang) very bad. |
| FISTIEST | • FISTY adj. like a fist. |
| FLUTISTS | • flutists n. Plural of flutist. • FLUTIST n. one who plays the flute, also FLAUTIST, FLUTER. |
| FOSSETTE | • fossette n. A little hollow; a dimple. • fossette n. (Medicine) A small, deep-centred ulcer of the transparent cornea. • fossette n. (Dentistry) A small depression in the crown of a tooth. |
| FUSTIEST | • fustiest adj. Superlative form of fusty: most fusty. • FUSTY adj. old-fashioned; musty, also FOUSTY. |
| LEFTISTS | • leftists n. Plural of leftist. • LEFTIST n. one tending to the left in politics. |
| OUTFASTS | • outfasts v. Third-person singular simple present indicative form of outfast. • OUTFAST v. to surpass in fasting. |
| SITFASTS | • sitfasts n. Plural of sitfast. • SITFAST n. a lump on a horse's skin. |
| STEDFAST | • stedfast adj. Archaic spelling of steadfast. • STEDFAST adj. (obsolete) of a person, a person's belief, loyalty, etc., constant, unwavering, also STEADFAST. |
| STIFFEST | • stiffest adj. Superlative form of stiff: most stiff Most rigid, most inflexible, most unbending. • STIFF adj. rigid. |
| SWIFTEST | • swiftest adj. Superlative form of swift: most swift. • SWIFT adj. rapid. |
| TUBFASTS | • tub-fasts n. Plural of tub-fast. • TUBFAST n. (Shakespeare) the treatment of venereal disease by fasting and sweating in a hot tub. |