12-letter words containing a, l, f, r
- inflammatory — tending to arouse anger, hostility, passion, etc.: inflammatory speeches.
- inflationary — of, pertaining to, reflective of, or causing inflation: inflationary prices.
- infomercials — Plural form of infomercial.
- informercial — infomercial.
- informidable — (obsolete) Not formidable; not to be feared or dreaded.
- infraclasses — Plural form of infraclass.
- 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.
- interfaculty — an ability, natural or acquired, for a particular kind of action: a faculty for making friends easily.
- interfemoral — situated between the thighs
- interfoliate — to interleave
- interfrontal — situated between the frontal bones
- interleafing — Present participle of interleaf.
- iron sulfate — ferrous sulfate.
- 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.
- isapi filter — (web) A replaceable DLL which the server calls whenever there is an HTTP request. When the filter is first loaded, it communicates to the server what sort of notifications will be accepted. After that, whenever a selected event occurs, the filter is called to process the event. Example applications of ISAPI filters include custom authentication schemes, compression, encryption, logging, traffic analysis or other request analyses.
- jaculiferous — having dartlike spines.
- jugal furrow — (in certain insects) the crease, between the anal and jugal veins, along which the wing folds.
- 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.
- lachrymiform — Shaped like a teardrop.
- laffer curve — a relationship postulated between tax rates and tax receipts indicating that rates above a certain level actually produce less revenue because they discourage taxable endeavors and vice versa.
- lamella roof — a vaulted roof composed of lamellae.
- laminar flow — the flow of a viscous fluid in which particles of the fluid move in parallel layers, each of which has a constant velocity but is in motion relative to its neighboring layers.
- lantern fish — any of several small, deep-sea fishes of the family Myctophidae, having rows of luminous organs along each side, certain species of which migrate to the surface at night.
- larch sawfly — a red and black sawfly, Pristiphora erichsonii, the larvae of which infest and feed on the leaves of larch.
- large-format — of or relating to a camera with an image area of 5 inches by 4 inches or more
- laticiferous — bearing or containing latex.
- law of areas — any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time (law of areas) or the square of the period of revolution of each planet is proportional to the cube of the semimajor axis of the planet's orbit (harmonic law)
- leaf mustard — a pungent powder or paste prepared from the seed of the mustard plant, used as a food seasoning or condiment, and medicinally in plasters, poultices, etc.
- leaf through — one of the expanded, usually green organs borne by the stem of a plant.
- 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
- leapfroggers — Plural form of leapfrogger.
- leapfrogging — Present participle of leapfrog.
- 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.
- leopard frog — a common North American green frog, Rana pipiens, having white-edged, dark oval spots on its back.
- life drawing — drawing objects or people from life
- life partner — one member of a monogamous relationship.
- life peerage — the title and rank of a life peer
- lifestreamer — a person who provides an online record of his or her life, either by means of live video footage or via an online collection of social network updates, blogs, and photos
- ligulifloral — having strap-shaped flowers
- live in fear — You can use expressions such as to live in fear and to live in terror to indicate that someone is always thinking about an unpleasant or frightening event, because they think that it might happen.
- loan officer — a bank employee who helps would-be borrowers get a loan
- lock forward — either of two players who make up the second line of the scrum and apply weight to the forwards in the front line