12-letter words containing s, e, t, f, o
- double first — a first in two subjects.
- doubtfulness — of uncertain outcome or result.
- draftsperson — a person employed in making mechanical drawings, especially in an architectural or engineering firm.
- east suffolk — a former administrative division of Suffolk county, in E England.
- edifications — Plural form of edification.
- efflorescent — efflorescing; blossoming.
- 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
- exsufflation — (obsolete) A blast from beneath.
- 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.
- 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.
- favorite son — (at a national political convention) a candidate nominated for office by delegates from his or her own state.
- feather shot — fine bean shot.
- 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.
- feminisation — Alternative spelling of feminization.
- fenestration — the design and disposition of windows and other exterior openings of a building.
- 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.
- 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)
- fissicostate — having divided or separated ribs
- fitness room — a room with gym equipment in it
- five nations — (formerly) a confederacy of North American Indian peoples living mainly in and around present-day New York state, consisting of the Cayugas, Mohawks, Oneidas, Onondagas, and Senecas
- flagellators — Plural form of flagellator.
- flageoletist — Someone who plays the flageolet.
- flatterously — in a flatterous manner
- fleet prison — (formerly) a London prison, esp used for holding debtors
- flittermouse — bat2 (def 1).
- flour sifter — a container in which flour is sifted
- flourishment — The act or state of flourishing.