15-letter words containing s, i, t, f, a
- false miterwort — foamflower.
- familiar spirit — a supernatural spirit often assuming animal form, supposed to attend and aid a witch, wizard, etc
- familiarisation — Alternative spelling of familiarization.
- family skeleton — a closely guarded family secret
- fantasmagorical — Alternative form of phantasmagorical.
- fantasticalness — The state or condition of being fantastical.
- fast-food chain — a chain of restaurants serving fast food
- fauntleroy suit — a formal outfit for a boy composed of a hip-length jacket and knee-length pants, often in black velvet, and a wide, lacy collar and cuffs, usually worn with a broad sash at the waist and sometimes a large, loose bow at the neck, popular in the late 19th century.
- feast of lights — Hanukkah.
- feast or famine — characterized by alternating, extremely high and low degrees of prosperity, success, volume of business, etc.: artists who lead a feast-or-famine life.
- feast-or-famine — characterized by alternating, extremely high and low degrees of prosperity, success, volume of business, etc.: artists who lead a feast-or-famine life.
- featherstitched — Simple past tense and past participle of featherstitch.
- ferroelasticity — (physics) A phenomenon, analogous to ferromagnetism and ferroelectricity, in which spontaneous strain arises within a material.
- fetal diagnosis — prenatal determination of genetic or chemical abnormalities in a fetus, esp by amniocentesis
- fetishistically — in a fetishistic manner
- fibrocartilages — Plural form of fibrocartilage.
- fiesta de toros — a bullfight; corrida.
- filling station — service station (def 1).
- fillister plane — an adjustable plane for cutting rabbets, grooves, etc
- fire resistance — the amount of resistance of a material or construction to fire.
- first amendment — an amendment to the U.S. Constitution, ratified in 1791 as part of the Bill of Rights, prohibiting Congress from interfering with freedom of religion, speech, assembly, or petition.
- first gentleman — (often initial capital letters) the husband of the U.S. president or a current governor or mayor.
- first secretary — The First Secretary of the Welsh Assembly is the leader of the ruling party.
- first world war — World War I.
- first-day cover — a cover marked so as to indicate that it was mailed on the first day of issue of the stamp it bears and from one of the cities at which the stamp was issued on that day.
- fish restaurant — a restaurant which serves mainly fish
- fishhook cactus — a large cactus, Ferocactus wislizenii, of the southwestern U.S. and Mexico, having hooked spines and red or yellow flowers.
- fission reactor — a nuclear reactor in which a fission reaction takes place
- fit as a fiddle — a musical instrument of the viol family.
- fitness fanatic — someone who is obsessed with exercise and keeping himself or herself fit
- fitness tracker — a wearable electronic device or a software application that monitors one's physical fitness and daily physical activity.
- fitness trainer — someone whose job is to improve other people's fitness
- five-star hotel — a top-quality hotel offering exceptional luxury
- fixed satellite — a satellite in a geostationary orbit
- flashlight fish — any of several fishes, especially Photoblepharon palpebratus, inhabiting deep, dark waters and having light organs that can be closed with a lid.
- fleet insurance — Fleet insurance is a type of insurance contract that applies to a number of vehicles.
- flemish brabant — a province of central Belgium, formed in 1995 from the N part of Brabant province: densely populated and intensively farmed, with large industrial centres. Pop: 1 031 904 (2004 est). Area: 2106 sq km (813 sq miles)
- flight of ideas — a rapid flow of thought, manifested by accelerated speech with abrupt changes from topic to topic: a symptom of some mental illnesses, especially manic disorder.
- flight sergeant — a noncommissioned officer in the Royal Air Force junior in rank to a master aircrew
- flimflam artist — trickster; swindler
- flirtatiousness — The quality of being flirtatious.
- floating island — a dessert consisting of boiled custard with portions of meringue, whipped cream, or whipped egg whites and sometimes jelly floating upon it or around it.
- floating screed — Building Trades. screed (def 3).
- floating supply — the aggregate supply of ready-to-market goods or securities.
- floral tributes — bunches or arrangements of flowers left as a memorial at the site of a fatal incident
- fluoridationist — One who supports the addition of fluoride to the public water supply.
- fob destination — FOB destination is a shipping term indicating that ownership of goods passes at delivery to their destination, and the seller has total responsibility until then.
- for pity's sake — You can say for pity's sake to add emphasis to what you are saying, especially when you are annoyed or upset.
- for their pains — You say that something was all you got for your pains when you are mentioning the disappointing result of situation into which you put a lot of work or effort.
- formation rules — the set of rules that specify the syntax of a formal system; the algorithm that generates the well-formed formulae