| ALOOFNESSES | • aloofnesses n. Plural of aloofness. • ALOOFNESS n. the state of being aloof. |
| CONEFLOWERS | • coneflowers n. Plural of coneflower. • cone-flowers n. Plural of cone-flower. • cone␣flowers n. Plural of cone flower. |
| FEMTOSECOND | • femtosecond n. A unit of time equal to 0.000 000 000 000 001 seconds (i.e. 1×10−15 seconds) and with symbol fs. • FEMTOSECOND n. one quadrillionth part of a second. |
| FETOPROTEIN | • fetoprotein n. (Biochemistry) Any of several antigens produced in a developing embryo, of which the most common is alpha-fetoprotein. • FETOPROTEIN n. any of several fetal antigens present in the adult in some abnormal conditions. |
| FOOTBALLENE | • footballene n. Buckminsterfullerene. • FOOTBALLENE n. buckminsterfullerene, a ball-shaped molecule containing 60 carbon atoms linked together in hexagons and pentagons to form a closed, near spherical and very stable structure. |
| FOREPERSONS | • forepersons n. Plural of foreperson. |
| FOREPOINTED | • forepointed v. Simple past tense and past participle of forepoint. • FOREPOINT v. to foreshadow. |
| FORESHORTEN | • foreshorten v. To render the image of an object such that it appears to be receding in space as it is perceived visually. • foreshorten v. To abridge, reduce, contract. • foreshorten v. To make shorter. |
| FORETOKENED | • foretokened v. Simple past tense and past participle of foretoken. • FORETOKEN v. to be a sign of, forebode. |
| FREEBOOTING | • freebooting n. Piracy or plundering. • freebooting n. (Computing) Software piracy, or stealing or unauthorized rehosting of digital content. • freebooting adj. Engaged in piracy or plunder. |
| FREECOOLING | • freecooling n. A system that chills water or air by using evaporative cooling. • free-cooling n. Alternative form of freecooling. • FREECOOLING n. a system that uses low ambient air temperature to chill water, esp. for use in air conditioning. |
| GOOFINESSES | • goofinesses n. Plural of goofiness. • GOOFINESS n. the state of being goofy. |
| TENDERFOOTS | • tenderfoots n. Plural of tenderfoot. • TENDERFOOT n. a newcomer in a comparatively rough or newly settled region. |
| UNDERFOOTED | • underfooted v. Simple past tense and past participle of underfoot. • UNDERFOOT v. to underpin. |