12-letter words containing a, l, f, r, b
- filtrability — the quality or extent of being filtrable
- fire balloon — a montgolfier.
- fire blanket — a large blanket-like piece of fire-resistant material such as fibreglass used in smothering a fire
- flabbergasts — Plural form of flabbergast.
- flabberghast — (archaic) Alternative form of flabbergast.
- flabelliform — Shaped like a fan; flabellate.
- flabergasted — Simple past tense and past participle of flabergast.
- flame carbon — a carbon electrode containing metallic salts that colour the arc in a flame-arc light
- flannelboard — a flannel-covered surface to which other flannel pieces, as letters of the alphabet, numbers, etc., adhere merely by contact, used mainly in schools as a visual aid.
- flat battery — power cell that has run down
- flinders bar — a bar of soft iron, mounted vertically beneath a compass to compensate for vertical magnetic currents.
- float bridge — a bridge, as from a pier to a boat, floating at one end and hinged at the other to permit loading and unloading at any level of water.
- floating rib — one member of the two lowest pairs of ribs, which are attached neither to the sternum nor to the cartilages of other ribs.
- flow breccia — a volcanic breccia that has solidified from a lava flow.
- fluorocarbon — any of a class of compounds produced by substituting fluorine for hydrogen in a hydrocarbon, and characterized by great chemical stability: used chiefly as a lubricant, refrigerant, fire extinguishing agent, and in industrial and other applications in which chemical, electrical, flame, and heat resistance is essential; banned as an aerosol propellant in the U.S. because of concern about ozone layer depletion.
- flutterballs — Plural form of flutterball.
- flutterboard — a kickboard.
- fly in amber — a strange relic or reminder of the past
- foot-lambert — a unit of luminance or photometric brightness, equal to the luminance of a surface emitting a luminous flux of one lumen per square foot, the luminance of a perfectly reflecting surface receiving an illumination of one foot-candle. Abbreviation: fL.
- forbearingly — In a forbearing manner.
- forecastable — to predict (a future condition or occurrence); calculate in advance: to forecast a heavy snowfall; to forecast lower interest rates.
- forgeability — (metallurgy) The quality or degree of being forgeable.
- formalizable — Capable of being formalized.
- franchisable — a privilege of a public nature conferred on an individual, group, or company by a government: a franchise to operate a bus system.
- frangibility — The state or quality of being frangible.
- free balloon — a balloon, often equipped to carry passengers, that drifts with air currents and whose ascent and descent are controlled by the release of ballast and buoyant gas.
- frequentable — Accessible.
- fribble away — to use wastefully
- frontal bone — a broad membrane bone of the skull, forming the forehead and the upper portion of each orbit.
- frontal lobe — the anterior part of each cerebral hemisphere, in front of the central sulcus.
- funambulator — a tightrope-walker; a funambulist
- gambrel roof — a gable roof, each side of which has a shallower slope above a steeper one. Compare mansard (def 1).
- half brother — brother (def 2).
- half-brother — brother (def 2).
- half-cup bra — a bra that covers three-quarters of the breasts rather than all of the breasts
- imperforable — not able to be perforated
- informidable — (obsolete) Not formidable; not to be feared or dreaded.
- infraorbital — (anatomy) Below the orbit (of the eye).
- infundibular — a funnel-shaped organ or part.
- insufferable — not to be endured; intolerable; unbearable: their insufferable insolence.
- insufferably — not to be endured; intolerable; unbearable: their insufferable insolence.
- irreformable — insusceptible to reforming influences; incorrigible.
- irreformably — in an irreformable manner
- irrefragable — not to be disputed or contested.
- irrefragably — In an irrefragable state or condition.
- labour force — The labour force consists of all the people who are able to work in a country or area, or all the people who work for a particular company.
- leaf warbler — any of several small, greenish or brownish, Old World warblers of the genus Phylloscopus that feed on insects among the leaves of trees.
- leaf-climber — a plant that climbs by using leaves specialized as tendrils
- left bracket — (character) "[". ASCII character 91. Common: left square bracket; ITU-T: opening bracket; bracket. Rare: square; INTERCAL: U turn. Paired with right bracket ("]").
- left-brained — having the left brain dominant, therefore being more adept at logic, calculation, language, and other thought processes or skills usually associated with the left brain.