| BENEFITERS | • benefiters n. Plural of benefiter. • BENEFITER n. one who benefits. |
| BRIEFCASES | • briefcases n. Plural of briefcase. • BRIEFCASE n. a small case for carrying briefs, or for documents in general. |
| DEBRIEFERS | • debriefers n. Plural of debriefer. • DEBRIEFER n. one who debriefs. |
| FEBRICULES | • febricules n. Plural of febricule. • FEBRICULE n. a slight short fever, also FEBRICULA. |
| FEBRIFUGES | • febrifuges n. Plural of febrifuge. • FEBRIFUGE n. something which reduces fever. |
| FIBERSCOPE | • fiberscope n. (American spelling) a flexible fibreoptic device for viewing otherwise inaccessible areas. • FIBERSCOPE n. a medical instrument using fibre optic bundles, also FIBRESCOPE. |
| FIBRESCOPE | • fibrescope n. (Britain) An instrument, consisting of a fibre optic bundle, used to observe inaccessible areas. • FIBRESCOPE n. a medical instrument using fibre optic bundles, also FIBERSCOPE. |
| FIREBREAKS | • firebreaks n. Plural of firebreak. • fire␣breaks n. Plural of fire break. • FIREBREAK n. a strip of land kept clear to stop the spread of a fire. |
| FIREBUSHES | • FIREBUSH n. as in Chilean firebush, a South American shrub with scarlet flowers. |
| FOREBODIES | • forebodies n. Plural of forebody. • FOREBODY n. the forward part of a ship. |
| FOXBERRIES | • foxberries n. Plural of foxberry. • FOXBERRY n. the red whortleberry. |
| FREEBASING | • freebasing v. Present participle of freebase. • free␣basing v. Present participle of free base. • FREEBASE v. to refine cocaine by heating it with ether. |
| OVERBRIEFS | • OVERBRIEF v. to brief excessively. |
| SEBIFEROUS | • sebiferous adj. (Botany) Producing vegetable tallow. • sebiferous adj. (Physiology) Producing fat; sebaceous. • SEBIFEROUS adj. bearing fatty matter. |
| SUBFERTILE | • subfertile adj. Exhibiting subfertility. • SUBFERTILE adj. not very fertile. |