9-letter words containing o, f, l, i
- factional — of a faction or factions.
- factoidal — of or resembling a factoid; (of a piece of writing) comprising facts and factoids
- factorial — Mathematics. the product of a given positive integer multiplied by all lesser positive integers: The quantity four factorial (4!) = 4 ⋅ 3 ⋅ 2 ⋅ 1 = 24. Symbol: n!, where n is the given integer.
- fail-soft — pertaining to or noting facilities built into a system, as in an automobile or a computer, for continuing operations on an interim basis and probably with reduced efficiency, if parts of the system fail.
- falcation — the state of being falcate, a falcate appendage
- falchions — Plural form of falchion.
- falciform — sickle-shaped; falcate.
- falconine — any of several birds of prey of the family Falconidae, especially of the genus Falco, usually distinguished by long, pointed wings, a hooked beak with a toothlike notch on each side of the upper bill, and swift, agile flight, typically diving to seize prey: some falcon species are close to extinction.
- falconoid — an antioxidant compound found in tea and thought to resist cancer
- fall into — to drop or descend under the force of gravity, as to a lower place through loss or lack of support.
- fallopian — Alternative form of Fallopian.
- fallowing — (of land) plowed and left unseeded for a season or more; uncultivated.
- fatty oil — fixed oil.
- favillous — (obsolete) Of or pertaining to ashes.
- fellation — oral stimulation of the penis, especially to orgasm.
- felonious — Law. pertaining to, of the nature of, or involving a felony: felonious homicide; felonious intent.
- festilogy — a treatise on the subject of church festivals
- fibroline — a yarn made from waste products at cotton factories
- fibrolite — sillimanite.
- fibrously — In a fibrous manner.
- fictional — invented as part of a work of fiction: Sherlock Holmes is a fictional detective.
- fidelismo — Castroism.
- fieldboot — a close-fitting knee-length boot
- fieldvole — a small rodent, Microtus agrestis
- fieldwork — Also, field work. work done in the field, as research, exploration, surveying, or interviewing: archaeological fieldwork.
- filaceous — composed of threads
- filiation — the fact of being the child of a certain parent.
- film noir — a motion picture with an often grim urban setting, photographed in somber tones and permeated by a feeling of disillusionment, pessimism, and despair.
- filmgoers — Plural form of filmgoer.
- filmgoing — the activity of going to see films
- filmology — (film) A 1950s\u201360s movement of theoretical study relating to film.
- filoplume — a specialized, hairlike feather having a slender shaft with few or no barbs.
- filopodia — thin projections extending from the edge of migrating cells
- filoselle — Floss silk, or silk thread resembling this, used in embroidery.
- filoviral — Relating to filoviruses.
- filovirus — any of several filamentous, single-stranded RNA viruses of the family Filoviridae, defined by their unique appearance and reproductive strategies, as the Ebola and Marburg viruses.
- fire opal — a red Mexican opal, often with a color play.
- fire-plow — a stick that is rubbed in a wooden groove to produce sparks for igniting a fire.
- firefloat — a boat used for firefighting
- fireflood — a procedure designed to extract more oil from a well by injecting compressed air into the ground and burning some of the oil to increase the flow.
- firelocks — Plural form of firelock.
- fish pole — fishing pole.
- fish-pole — a long tapered flexible pole, often in jointed sections, for use with a fishing line and, usually, a reel
- fishbowls — Plural form of fishbowl.
- fissional — Of or pertaining to fission.
- fistulose — Formed like a fistula; hollow; reed-like.
- fistulous — Pathology. pertaining to or resembling a fistula.
- five hole — the opening between a goaltender's parted legs.
- fixed oil — a natural vegetable or animal oil that is nonvolatile, as lard oil, linseed oil, etc.
- flagitous — (archaic) wicked, reprehensible.