12-letter words containing f, e, o, s
- efflorescing — Present participle of effloresce.
- effortlessly — requiring or involving no effort; displaying no signs of effort; easy: an effortless writing style.
- effronteries — Plural form of effrontery.
- effusiometer — an apparatus for determining rates of effusion of gases, usually used for measuring molecular weights
- eisteddfodau — Plural form of eisteddfod.
- eisteddfodic — Relating to an eisteddfod.
- elfin forest — the zone of stunted wind-blown trees growing at high altitudes just above the timberline on tropical mountains
- end of steel — a point up to which railway tracks have been laid
- enforcements — Plural form of enforcement.
- equisetiform — having the form of equisetum
- exclusive of — not including or allowing for; ignoring
- exsufflation — (obsolete) A blast from beneath.
- fabulousness — almost impossible to believe; incredible.
- factiousness — given to faction; dissentious: A factious group was trying to undermine the government.
- factorisable — Alternative spelling of factorizable.
- false bottom — a horizontal partition above the actual bottom of a box, trunk, etc., especially one forming a secret compartment.
- false colour — colour used in a computer or photographic display to help in interpreting the image, as in the use of red to show high temperatures and blue to show low temperatures in an infrared image converter
- false indigo — any of several North American shrubs belonging to the genus Amorpha, of the legume family, especially A. fruticosa, having compound leaves with pinnate leaflets and long, dense clusters of purplish flowers.
- fashiousness — the quality of being fashious; troublesomeness
- fast neutron — a neutron produced by nuclear fission that has lost little energy by collision; a neutron with a kinetic energy in excess of 0.1 MeV
- fast reactor — a nuclear reactor using little or no moderator, fission being caused by fast neutrons
- fathomlessly — In a fathomless manner.
- fauxmosexual — (slang) A heterosexual person who affects homosexual characteristics.
- favorite son — (at a national political convention) a candidate nominated for office by delegates from his or her own state.
- favouredness — the quality of or extent to which something is favoured
- fearsomeness — causing fear: a fearsome noise.
- feather shot — fine bean shot.
- feel oneself — to perceive or examine by touch.
- feldspathoid — Also, feldspathoidal. of or relating to a group of minerals similar in chemical composition to certain feldspars except for a lower silica content.
- feldspathose — (mineralogy) Containing feldspar.
- felicitously — In a felicitous manner.
- fellowshiped — Simple past tense and past participle of fellowship.
- feminisation — Alternative spelling of feminization.
- fenestration — the design and disposition of windows and other exterior openings of a building.
- fennoscandia — region in N Europe, including Scandinavia, Finland, and the part of NW Russia west of the White Sea
- ferrokinesis — (parapsychology) The ability to mentally manipulate iron and other metals.
- ferrosilicon — a ferroalloy containing up to 95 percent silicon.
- festivalgoer — A person attending a festival.
- fetoproteins — Plural form of fetoprotein.
- fiber optics — the branch of optics that deals with the transmission of light through transparent fibers, as in the form of pulses for the transmission of data or communications, or through fiber bundles for the transmission of images.
- fibre optics — optical fibre
- fictionalise — Non-Oxford British standard spelling of fictionalize.
- fidel castro — Cipriano [sip-ree-ah-noh;; Spanish see-pree-ah-naw] /ˌsɪp riˈɑ noʊ;; Spanish ˌsi priˈɑ nɔ/ (Show IPA), 1858?–1924, Venezuelan military and political leader: president 1901–08; exiled 1908.
- field sports — sports carried on in the open countryside, such as hunting, shooting, or fishing
- fifty-second — next after the fifty-first; being the ordinal number for 52.
- find oneself — to come upon by chance; meet with: He found a nickel in the street.
- fingerboards — Plural form of fingerboard.
- fire station — a building in which firefighting apparatus and usually fire department personnel are housed; firehouse.
- fire support — support given by artillery and aircraft to infantry and armored vehicles.
- first person — the grammatical person used by a speaker in statements referring to himself or herself (first person singular) or to a group including himself or herself (first person plural)