| FOOTPRINTS | • footprints n. Plural of footprint. • FOOTPRINT n. the mark left on the ground or floor by a person's or animal's foot. |
| FORSTERITE | • forsterite n. (Mineralogy) A white variety of olivine that is mostly magnesium silicate, Mg2SiO4. • FORSTERITE n. a white, yellow, or green mineral of the olivine group consisting of magnesium silicate. |
| FORTITUDES | • fortitudes n. Plural of fortitude. • FORTITUDE n. strength of mind that enables a person to encounter danger or bear pain or adversity with courage. |
| FORTNIGHTS | • fortnights n. Plural of fortnight. • FORTNIGHT n. a period of two weeks. |
| FORTUITIES | • fortuities n. Plural of fortuity. • FORTUITY n. an accidental occurrence. |
| FORTUITISM | • fortuitism n. The doctrine that chance is involved in natural events rather than absolute determinism. • FORTUITISM n. belief in evolution by chance variation. |
| FORTUITIST | • fortuitist n. A believer in fortuitism. • FORTUITIST n. one who believes in evolution by chance variation. |
| FORTUITOUS | • fortuitous adj. Happening by chance; coincidental, accidental. • fortuitous adj. Happening by a lucky chance; lucky or fortunate. • fortuitous adj. (Law) Happening independently of human will. |
| FRITHSTOOL | • frithstool n. (Historical) An Anglo-Saxon stone seat, placed near the altar of a church, which afforded protection… • frith␣stool n. Alternative form of frithstool. • FRITHSTOOL n. a seat in churches near the altar, to which offenders formerly fled for sanctuary. |
| FRONTLISTS | • frontlists n. Plural of frontlist. • FRONTLIST n. a list of books about to be published. |
| FROSTBITES | • frostbites n. Plural of frostbite. • FROSTBITE v. to affect with frostbite. |
| FROWSTIEST | • frowstiest adj. Superlative form of frowsty: most frowsty. • FROWSTY adj. fusty, stuffy, also FROUZY, FROWSY, FROWZY. |
| FUSTIGATOR | • fustigator n. A person who fustigates. • FUSTIGATOR n. one who fustigates, beats with a club. |
| OUTFITTERS | • outfitters n. Plural of outfitter. • OUTFITTER n. a person who deals in clothing, haberdashery, sporting equipment, etc. |
| SHIRTFRONT | • shirtfront n. The front part of a shirt. • shirtfront n. A detachable insert that simulates the front of a shirt. • shirtfront n. (Cricket) A pitch that is easy to bat on. |
| SHOPFITTER | • shopfitter n. One who carries out shopfitting. • SHOPFITTER n. a worker who makes and installs fittings for commercial premises. |
| STAIRFOOTS | • stairfoots n. Plural of stairfoot. • STAIRFOOT n. the level place at the foot of the stairs. |
| STOUTHRIEF | • stouthrief n. (Archaic) A Scottish criminal offense; a form of rief (theft) committed by force. • STOUTHRIEF n. (Scots) theft with violence. |
| STRATIFORM | • stratiform adj. Occurring in layers. • stratiform adj. (Geology) Descriptive of rocks with extensive horizontal development. • stratiform adj. (Meteorology) Descriptive of clouds with extensive horizontal development. |