| FERTILISE | • fertilise v. Non-Oxford British spelling standard spelling of fertilize. • FERTILISE v. to make fertile, also FERTILIZE. |
| FILISTERS | • filisters n. Plural of filister. • FILISTER n. a groove on a window frame, also FILLESTER, FILLISTER. |
| FILLISTER | • fillister n. (Architecture) A rabbet/rebate for holding a sash window. • fillister n. A plane for making a rabbet. • FILLISTER n. a rabbet plane used in making window sashes, also FILISTER, FILLESTER. |
| FILMSTRIP | • filmstrip n. A length of film containing individual photographs or diagrams intended to be shown in sequence as instruction… • filmstrip n. (Computer graphics) A file containing a sequence of images or video frames. • film␣strip n. Alternative form of filmstrip. |
| FIRSTLING | • firstling n. The first produce or result, notably firstborn offspring. • firstling n. The first of a class or kind. • firstling n. The thing first thought or done. |
| FLIRTIEST | • flirtiest adj. Superlative form of flirty: most flirty. • FLIRTY adj. lightheartedly amorous, also FLIRTISH. |
| FLIRTINGS | • flirtings n. Plural of flirting. • FLIRTING n. the act of flirting. |
| FLORISTIC | • floristic adj. Describing a region with a relatively uniform composition of plant species. • floristic adj. Of or pertaining to floristics. • FLORISTIC adj. relating to flora. |
| FRAILTIES | • frailties n. Plural of frailty. • FRAILTY n. a weakness of character. |
| FRILLIEST | • frilliest adj. Superlative form of frilly: most frilly. • FRILLY adj. having frills. |
| FRITFLIES | • fritflies n. Plural of fritfly. • frit␣flies n. Plural of frit fly. • FRITFLY n. a small fly. |
| PROFILIST | • profilist n. (Art) An artist who draws or paints profiles. • PROFILIST n. one who draws profiles, also PROFILER. |
| SPIRITFUL | • spiritful adj. (Now rare) Full of spirit; spirited. • SPIRITFUL adj. full of spirit; spirited. |
| STAIRLIFT | • stairlift n. A motorized platform installed in a stairway, which traverses the stairs when activated and can be ridden… • stair␣lift n. Alternative spelling of stairlift. • STAIRLIFT n. a lift to enable people to get up the stairs. |
| TRIFLINGS | • triflings n. Plural of trifling. • TRIFLING n. the act of wasting time. |
| TRIFOLIES | • trifolies n. Plural of trifoly. • TRIFOLY n. a plant having three-lobed leaves, also TREFOIL. |