- frugal: Economical.
- fruition: Fulfillment.
- fugacious: Fleeting.
- fulcrum: The support on or against which a lever rests, or the point about which it turns.
- fulminate: To cause to explode.
- fulsome: Offensive from excess of praise or commendation.
- fumigate: To subject to the action of smoke or fumes, especially for disinfection.
- functionary: An official.
- fundamental: Basal.
- fungible: That may be measured, counted, or weighed.
- fungous: Spongy.
- fungus: A plant destitute of chlorophyll, as a mushroom.
- furbish: To restore brightness or beauty to.
- furlong: A measure, one-eighth of a mile.
- furlough: A temporary absence of a soldier or sailor by permission of the commanding officer.
- furrier: A dealer in or maker of fur goods.
- further: More distant or advanced.
- furtherance: Advancement.
- furtive: Stealthy or sly, like the actions of a thief.
- fuse: To unite or blend as by melting together.
- fusible: Capable of being melted by heat.
- futile: Of no avail or effect.
- futurist: A person of expectant temperament.
- gaiety: Festivity.
- gaily: Merrily.
- gait: Carriage of the body in going.
- gallant: Possessing a brave or chivalrous spirit.
- galore: Abundant.
- galvanic: Pertaining or relating to electricity produced by chemical action.
- galvanism: Current electricity, especially that arising from chemical action.
- galvanize: To imbue with life or animation.
- gamble: To risk money or other possession on an event, chance, or contingency.
- gambol: Playful leaping or frisking.
- gamester: A gambler.
- gamut: The whole range or sequence.
- garnish: In cookery, to surround with additions for embellishment.
- garrison: The military force stationed in a fort, town, or other place for its defense.
- garrote: To execute by strangling.
- garrulous: Given to constant trivial talking.
- gaseous: Light and unsubstantial.
- gastric: Of, pertaining to, or near the stomach.
- gastritis: Inflammation of the stomach.
- gastronomy: The art of preparing and serving appetizing food.
- gauge: An instrument for measuring.
- gendarme: In continental Europe, particularly in France, a uniformed and armed police officer.
- genealogist: A tracer of pedigrees.
- genealogy: A list, in the order of succession, of ancestors and their descendants.
- generality: The principal portion.
- generalize: To draw general inferences.
- generally: Ordinarily.