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English Words Starting With F

5,868 entries — pick a word to see its definition, pronunciation, and usage.

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Noun Verb Adjective Adverb Plural noun Combining form Verb (transitive)Verb (intransitive)Verb (ambitransitive)

flute
nounverbverb-intransitive+1B1
/fluːt/A high-pitched woodwind musical instrument, typically made of metal or wood, which is played by blowing across a hole at one end.
fluter
nounLow
/ˈfluːtə/A person who plays the flute. A less common agent noun derived from the verb 'to flute'.
fluting
nounC1
/ˈfluːtɪŋ/The act or process of making a series of long, high-pitched sounds, or the act of making parallel decorative grooves.
flutist
nounLow-Mid
/ˈfluːtɪst/A person who plays the flute.
flutter
nounverbverb-intransitive+1B2
/ˈflʌt.ər/to move lightly and quickly with a flapping or vibrating motion
flutter kick
nounMedium
/ˈflʌtə kɪk/A swimming or exercise technique involving rapid, alternating, small-amplitude leg movements, typically performed while lying on the back or stomach.
flutter mill
nounRare / Archaic
/ˈflʌtə ˌmɪl/A small, often decorative waterwheel, typically turned by a flowing stream, used historically for light tasks or as an ornamental garden feature.
flutter sleeve
nounLow (Specialized)
/ˈflʌt.ə ˌsliːv/A loose, flowy sleeve, typically cut in one piece with the bodice, that is wide at the armhole and tapers slightly toward a loose or elasticized wrist, creating a light, airy movement.
flutter wheel
nounVery Low (Specialist/Term)
/ˈflʌtə ˌwiːl/A type of waterwheel where the wheel is placed horizontally in a fast-flowing stream, driven by the water striking blades or paddles at the bottom.
flutterboard
nounLow
/ˈflʌtəbɔːd/A buoyant board used to support a swimmer, especially a beginner, in the water.
fluvoxamine
nounC1
/ˌfluːvɒkˈsæmiːn/A selective serotonin reuptake inhibitor (SSRI) antidepressant medication used to treat obsessive-compulsive disorder and depression.
flux
nounverbverb-intransitive+1C1
/flʌks/Continuous change, movement, or flow; a state of instability or transition.
flux density
nounC1+
/ˈflʌks ˈden.sɪ.ti/The amount of a physical quantity (especially magnetic field strength) passing through a unit area perpendicular to the direction of flow.
flux gate
nounC2
/ˈflʌks ɡeɪt/A device, typically a type of sensor or transformer, used to detect and measure the strength and direction of a magnetic field.
flux linkage
nounC2/Very Low (Technical/Highly Specialized)
/flʌks ˈlɪŋ.kɪdʒ/The total magnetic flux (Φ) linked with a coil, equal to the product of the number of turns in the coil (N) and the flux passing through each turn.
fluxion
nounC2/Rare
/ˈflʌkʃ(ə)n/The action or process of flowing or changing continuously; a derivative in early calculus, representing the rate of change of a variable.
fluxmeter
nounVery Low
/ˈflʌksmiːtə/An instrument for measuring magnetic flux.
fly
nounverbA1
/flaɪ/To move through the air using wings or by being carried by air; to operate or travel in an aircraft.
fly agaric
nounC2 (Very Low Frequency)
/ˌflaɪ ˈæɡ.ər.ɪk/A distinctive, often poisonous, mushroom with a bright red cap covered in white spots, known scientifically as Amanita muscaria.
fly ash
nounLow
/ˈflaɪ ˌæʃ/Fine, powdery residue consisting of inorganic particles collected from the flue gases of furnaces burning pulverized coal.

Showing 3321–3340 of 5868 words.