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15-letter words containing f, e, n, s, t, r

  • existence proof — non-constructive proof
  • fabric softener — a substance added to fabrics during laundering to make them puffier and softer.
  • faithworthiness — the quality of being faithworthy
  • false buckthorn — a spiny shrub or small tree, Bumelia lanuginosa, of the sapodilla family, native to the southern U.S., having gummy, milky sap and white, bell-shaped flowers and yielding a hard, light-brown wood.
  • false pretences — fraud, deception
  • false pretenses — If you do something under false pretenses, you do it when people do not know the truth about you and your intentions.
  • 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 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.
  • fencepost error — 1. (Rarely "lamp-post error") A problem with the discrete equivalent of a boundary condition, often exhibited in programs by iterative loops. From the following problem: "If you build a fence 100 feet long with posts 10 feet apart, how many posts do you need?" (Either 9 or 11 is a better answer than the obvious 10). For example, suppose you have a long list or array of items, and want to process items m through n; how many items are there? The obvious answer is n - m, but that is off by one; the right answer is n - m + 1. The "obvious" formula exhibits a fencepost error. See also zeroth and note that not all off-by-one errors are fencepost errors. The game of Musical Chairs involves a catastrophic off-by-one error where N people try to sit in N - 1 chairs, but it's not a fencepost error. Fencepost errors come from counting things rather than the spaces between them, or vice versa, or by neglecting to consider whether one should count one or both ends of a row. 2. (Rare) An error induced by unexpected regularities in input values, which can (for instance) completely thwart a theoretically efficient binary tree or hash coding implementation. The error here involves the difference between expected and worst case behaviours of an algorithm.
  • 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 intention — See under intention (def 5a).
  • first messenger — a hormone that triggers a biochemical reaction at a site removed from its release.
  • first principle — any axiom, law, or abstraction assumed and regarded as representing the highest possible degree of generalization.
  • first responder — a person who is certified to provide medical care in emergencies before more highly trained medical personnel arrive on the scene: a firefighter trained as a first responder.
  • first-intention — an act or instance of determining mentally upon some action or result.
  • fish restaurant — a restaurant which serves mainly fish
  • fission reactor — a nuclear reactor in which a fission reaction takes place
  • 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
  • flatbed scanner — a type of optical scanner having a flat, stationary surface on which a page is scanned by a moving head.
  • flatter oneself — to hold the self-satisfying or self-deluding belief (that)
  • 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 sergeant — a noncommissioned officer in the Royal Air Force junior in rank to a master aircrew
  • flirtatiousness — The quality of being flirtatious.
  • floating screed — Building Trades. screed (def 3).
  • flying buttress — a segmental arch transmitting an outward and downward thrust to a solid buttress that through its inertia transforms the thrust into a vertical one.
  • flying fortress — a heavy bomber, the B-17, with four radial piston engines, widely used over Europe and the Mediterranean by the U.S. Air Force in World War II.
  • food insecurity — an economic and social condition of limited or uncertain access to adequate food.
  • for the present — being, existing, or occurring at this time or now; current: increasing respect for the present ruler of the small country.
  • 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.
  • forensic expert — an expert in applying scientific, technical or medical knowledge to the purposes of law
  • foreshortenings — Plural form of foreshortening.
  • foresightedness — care or provision for the future; provident care; prudence.
  • forest of arden — a region of N Warwickshire, part of a former forest: scene of Shakespeare's As You Like It
  • formation rules — the set of rules that specify the syntax of a formal system; the algorithm that generates the well-formed formulae
  • forthcomingness — coming, forth, or about to come forth; about to appear; approaching in time: the forthcoming concert.
  • fortysomethings — Plural form of fortysomething.
  • fourteen points — a statement of the war aims of the Allies, made by President Wilson on January 8, 1918.
  • fourteen-points — a statement of the war aims of the Allies, made by President Wilson on January 8, 1918.
  • fovea centralis — a small pit or depression at the back of the retina forming the point of sharpest vision.
  • fragmentariness — The quality of being fragmentary.
  • fragrance strip — a folded, usually sealed strip on a page or card, impregnated with fragrance that is released when pulled or torn open: The magazine is full of fragrance strips in the advertisements.
  • francis turbine — a water turbine designed to produce high flow from a low head of pressure: used esp in hydroelectric power generation
  • frankensteinian — a person who creates a monster or a destructive agency that cannot be controlled or that brings about the creator's ruin.
  • fraternal twins — one of a pair of twins, not necessarily resembling each other, or of the same sex, that develop from two separately fertilized ova.
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