| EFFORTFUL | • effortful adj. Requiring or showing effort. • EFFORTFUL adj. requiring effort. |
| FALCIFORM | • falciform adj. Sickle-shaped. • FALCIFORM adj. shaped like a sickle. |
| FIREFLOAT | • firefloat n. A fireboat. • FIREFLOAT n. a boat or raft used in harbours for extinguishing fires. |
| FIREFLOOD | • FIREFLOOD n. a method of extracting oil from a well by burning some of the oil to increase the flow. |
| FLATFORMS | • flatforms n. Plural of flatform. • FLATFORM n. a thick, level sole on a shoe. |
| FLAVORFUL | • flavorful adj. Full of flavor. • FLAVORFUL adj. full of flavor, also FLAVOURFUL. |
| FLORIFORM | • floriform adj. Shaped like a flower. • FLORIFORM adj. shaped like a flower. |
| FLOWERFUL | • flowerful adj. (Poetic) flowery, abundant in flowers. • FLOWERFUL adj. abounding with flowers. |
| FOOLPROOF | • foolproof adj. (Of a device) Protected against, or designed to be proof against, misuse or error. • foolproof adj. (Of an idea or plan) Certain to succeed in all eventualities, or claimed to be so; infallible. • foolproof v. (Transitive) To render foolproof. |
| FOREFEELS | • forefeels v. Third-person singular simple present indicative form of forefeel. • FOREFEEL v. to have a premonition of. |
| FORELIFTS | • forelifts v. Third-person singular simple present indicative form of forelift. • FORELIFT v. (Spenser) to lift up in front. |
| FORFAULTS | • FORFAULT n. forfeiture. |
| FORGETFUL | • forgetful adj. Unable to remember things well; liable to forget. • forgetful adj. (Mathematics) Dropping some of the input’s structure or properties before producing an output. • FORGETFUL adj. inclined to forget. |
| FORKLIFTS | • forklifts n. Plural of forklift. • FORKLIFT v. to raise or move by machine. |
| FORTYFOLD | • fortyfold adj. By a multiple of forty; by forty times as much or as many. • fortyfold adv. By a factor of forty. • FORTYFOLD adj. multiplied forty times over. |
| FURFUROLE | • furfurole n. Alternative form of furfurol. • FURFUROLE n. a liquid obtained by heating bran with dilute sulphuric acid, also FURAL, FURFURAL, FURFURALDEHYDE, FURFUROL, FUROL, FUROLE. |
| FURFUROLS | • furfurols n. Plural of furfurol. • FURFUROL n. a liquid obtained by heating bran with dilute sulphuric acid, also FURAL, FURFURAL, FURFURALDEHYDE, FURFUROLE, FUROL, FUROLE. |
| OFFERABLE | • offerable adj. Capable of being offered; suitable or worthy to be offered. • OFFERABLE adj. capable of being offered; suitable or worthy to be offered. |
| SAFFLOWER | • safflower n. A cultivated thistle-like plant, Carthamus tinctorius, family Asteraceae, now grown mainly for its oil. • SAFFLOWER n. a thistle-like plant yielding an orange dye. |