f
abbreviation
firm.
f
2
American
F
3
American
[ef]
/ ɛf /
Or
f
noun
-
F's,
plural
-
Fs,
plural
-
f's,
plural
-
fs
plural
-
the sixth letter of the English alphabet, a consonant.
-
any spoken sound represented by the letter F or f, as in fat, differ, or huff.
-
something having the shape of an F .
-
a written or printed representation of the letter F or f.
-
a device, as a printer's type, for reproducing the letter F or f.
F
5
American
Symbol.
-
the sixth in order or in a series.
-
(sometimes lowercase) (in some grading systems) a grade or mark that indicates academic work of the lowest quality; failure.
-
Music.
-
the fourth tone in the scale of C major or the sixth tone in the relative minor scale, A minor.
-
a string, key, or pipe tuned to this tone.
-
a written or printed note representing this tone.
-
(in the fixed system of solmization) the fourth tone of the scale of C major, called fa.
-
the tonality having F as the tonic note.
-
-
(sometimes lowercase) the medieval Roman numeral for 40.
-
Mathematics.
-
(sometimes lowercase) farad.
-
Chemistry. fluorine.
-
(sometimes lowercase)
-
Biochemistry. phenylalanine.
f/
6
American
Or
f/
or
f:
abbreviation
Photography.
F-
7
American
abbreviation
Military.
f.
8
American
abbreviation
f.
9
American
abbreviation
f.
10
American
abbreviation
f.
11
American
abbreviation
f.
12
American
abbreviation
-
farad.
-
farthing.
-
father.
-
fathom.
-
feet.
-
female.
-
feminine.
-
filly.
-
fine.
-
fluid (ounce).
-
folio.
-
following.
-
foot.
-
form.
-
formed of.
-
franc.
-
from.
-
Mathematics. function (of ).
F.
13
American
abbreviation
-
Fahrenheit.
-
February.
-
Fellow.
-
forint.
-
franc; francs.
-
France.
-
French.
-
Friday.
F
1
British
symbol
-
music
-
a note having a frequency of 349.23 hertz ( F above middle C ) or this value multiplied or divided by any power of 2; the fourth note of the scale of C major
-
a key, string, or pipe producing this note
-
the major or minor key having this note as its tonic
-
-
Fahrenheit
-
Fellow
-
chem fluorine
-
Helmholtz function
-
physics force
-
franc(s)
-
farad(s)
-
genetics a generation of filial offspring, F 1 being the first generation of offspring, F 2 being the second generation, etc
abbreviation
f
2
British
symbol
-
music forte: an instruction to play loudly
-
physics frequency
-
(formerly in the Netherlands) guilder
-
maths function (of)
-
physics femto-
-
chess See algebraic notation
f.
3
British
abbreviation
-
fathom(s)
-
female
-
grammar feminine
-
folio
-
following (page)
f
4
British
/ ɛf /
noun
-
the sixth letter and fourth consonant of the modern English alphabet
-
a speech sound represented by this letter, usually a voiceless labio-dental fricative, as in fat
F-
5
British
abbreviation
f
6
British
symbol
Other Word Forms
Noun Inflected Forms
Etymology
Origin of f.8
From the Latin word fac
Origin of f.9
From the Latin word f īant
Origin of f.10
From the Latin word fiat
Origin of f.11
From the Dutch word florin
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
The most recent game in the franchise, a spin-off called Silent Hill f, sold a million copies the day it was released in September 2025.
From BBC ● Feb. 16, 2026
The cybersecurity company’s earnings and revenue forecast met analysts’ expectations but f ailed to impress investors.
From Barron's ● Nov. 20, 2025
Thompson has instituted a curfew around the facility, allowing protests to occur only between f 9 a.m. and 6 p.m.
From Los Angeles Times ● Oct. 10, 2025
In Welsh a single f is pronounced as a v — it takes two fs to make the noise in “fight” — and the emphasis is always on the penultimate syllable.
From Salon ● May 27, 2024
“We saw a lorry driver who agreed to carry us,” the man said, and Ugwu could tell right away that he was Master’s kinsman; his Abba dialect was heavy, each f sounding like a v.
From "Half of a Yellow Sun" by Chimamanda Ngozi Adichie
A 3 is a D or high E, a 2 is a low E or high F, and a 1 is a low F or G. And a U is still a U.
From BBC ● Aug. 18, 2026
A delicious word salad: How many words can you create with the letters Y, B, O, F, U, and N?
From Slate ● Aug. 18, 2026
Ford Motor’s F 1.91%increase; up pointing triangle revenue fell in the second quarter amid declining U.S. sales.
From The Wall Street Journal ● Jul. 28, 2026
"The team is united and that feeling is getting even stronger now," said Japan coach Hajime Moriyasu, whose side finished second in Group F behind the Netherlands.
From Barron's ● Jun. 29, 2026
“I must give this paper an F, Stella,” Mrs. Grayson told Stella sadly at the end of the day, catching her as she was walking out the schoolhouse door.
From "Stella by Starlight" by Sharon M. Draper
The cybersecurity company’s earnings and revenue forecast met analysts’ expectations but f ailed to impress investors.
From Barron's ● Nov. 20, 2025
Thompson has instituted a curfew around the facility, allowing protests to occur only between f 9 a.m. and 6 p.m.
From Los Angeles Times ● Oct. 10, 2025
In Welsh a single f is pronounced as a v — it takes two fs to make the noise in “fight” — and the emphasis is always on the penultimate syllable.
From Salon ● May 27, 2024
A trial of the system f took place with two company employees in 2020 - the first successful passenger ride using hyperloop technology.
From BBC ● Dec. 22, 2023
Fairies, as envisaged by the Muggle, inhabit tiny dwellings fashioned out o f flower petals, hollowed-out toadstools and similar.
From "Fantastic Beasts and Where to Find Them" by J.K. Rowling
The Cincinnati Bengals ranked 27th and had an F- grade for their nutritional offerings.
From Washington Post ● Mar. 1, 2023
"If I could go lower than F- I would," John, a Floridian visiting the Golden State, told Fox News.
From Fox News ● Aug. 21, 2021
Freekick just outside the D. And the resultant freekick is an F-, as Oscar dabs the ball into the wall.
From The Guardian ● Sep. 16, 2015
Simply by changing the Ph- to an F-, the country star showed just how easily team names could be switched from masculine to feminine.
From Salon ● Mar. 29, 2014
The time in the F- 86, everything had gone well.
From "Flying to the Moon: An Astronaut's Story" by Michael Collins
“Syzygy or, the Ceasing of the Sun” by juliany f. taveras is a rumination on what the future might be like.
From New York Times ● Sep. 23, 2021
Adults of C. f. pastinator resemble the juvenile condition typical of C. f. frugilegus.
From Scientific American ● May 12, 2013
The price of a complete mammoth is $30,000 f. o. b.
From Time Magazine Archive
In 1924 he profited $25,000,000 by shipping parts to district assembling plants, putting them together there and then charging the f. o. b. selling price.
From Time Magazine Archive
Summarized from Servian by Köhler, Arch. f. slav.
From The Grateful Dead The History of a Folk Story by Gordon Hall Gerould
The installation, overseen by the museum’s new director—Xavier F. Salomon, the former chief curator of the Frick Collection—and the Gulbenkian’s curators, retains the original sequences and arrangements but also creates new conversations.
From The Wall Street Journal ● Aug. 26, 2026
Japan's Shin Miidera, a 16-year-old attacker playing for partner club Yokohama F. Marinos, is another CFG are monitoring very closely.
From BBC ● Aug. 23, 2026
“This weapon might help minimize corruption but with collateral damage,” John F. Hulpke, a professor at University College Dublin, wrote in the Journal of Management Inquiry in 2017.
From Salon ● Aug. 19, 2026
Across the street is an 8.5-acre historic South L.A. oasis — Augustus F. Hawkins Nature Park.
From Los Angeles Times ● Aug. 11, 2026
He wouldn’t have needed an F. Lee Bailey to get him off, at any rate.
From "The Best of Enemies" by Osha Gray Davidson
In general, we have a school district focused on 100% graduation rates, no F’s.
From Los Angeles Times ● Jul. 1, 2026
“We have seen Louisiana students go from all F’s to straight A’s because of this program,” Landry said in a written statement to the Journal.
From The Wall Street Journal ● Apr. 23, 2026
A date for Soldier F's trial will be decided early in the New Year.
From BBC ● Dec. 6, 2024
To make tracking your diet easier, consider using a food calculator to measure how well your meals align with the four F's and microbiome friendly options.
From Salon ● Oct. 29, 2024
You couldn’t be tongue-tied nor catch a case of lockjaw, or Tansy would give you an F. She was quick with her F’s.
From "The Teacher’s Funeral" by Richard Peck
Mr. Brownlee’s tenor proved rock-solid in Arturo’s demanding music, from his exquisitely relaxed, almost languid opening aria, “A te, o cara,” to some punishing high Fs.
From The Wall Street Journal ● Jan. 2, 2026
This exercise is the opposite of a zero Fs situation, though – she very much cares about the final glimpse the public has of Wendy Williams.
From Salon ● Feb. 23, 2024
When results day came around, Luke got his results - four Fs and an E.
From BBC ● Aug. 17, 2023
The complaint says Fallen Footwear has used the back-to-back Fs for a logo since 2003.
From Washington Times ● Jun. 13, 2023
“What if people think that the three Fs stand for ‘fee-fi-fo’?”
From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas
The Georgia native painted himself so much as one of Philly’s own, that it’s amazing Collins didn’t confess he was named with two f’s in honor of the Temple Tuff motto.
From Washington Times ● Dec. 14, 2016
Royal looked up and said, ‘I’ve been sitting here for 30 minutes, trying to figure out if professor has one or two f’s in it.’
From New York Times ● Nov. 7, 2012
"The only name I like is Jeff if you spell it with two f's instead of t's," she said.
From Time Magazine Archive
Gibbous nose aloft and in fine priggish voice, Master Freddie imparts phonetic reality to an age when Britishers wrote s's that looked like f's.
From Time Magazine Archive
Only Momma could decipher the lacy handwriting with its long, tall letters all bunched together and the lines running into one another because of the long-tailed, fancy z’s and f’s and g’s.
From "Homecoming" by Cynthia Voigt
Within 30 fs, its reflectance spectrum shifted dramatically and developed features linked to the appearance of a new optical absorption band.
From Science Daily ● Aug. 21, 2026
In Welsh a single f is pronounced as a v — it takes two fs to make the noise in “fight” — and the emphasis is always on the penultimate syllable.
From Salon ● May 27, 2024
Emotional truth is sacrificed at the altar of manufactured laffs, with two fs.
From Los Angeles Times ● Mar. 17, 2022
The time resolution of the setup after dispersion correction is ≤150 fs.
From Nature ● Mar. 28, 2017
Longitudinal section of flower; v, bracteole on the peduncle; l, sepals; ls, appendage of sepal; c, petals; cs, spur of the lower petals; fs, glandular appendage of the lower stamens; a, anthers.
From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" by Various
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
