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:
Townfall is not the first time the series has strayed away from the original game's location in America, 2025's Silent Hill f was set in 1960s rural Japan.
From BBC ● Sep. 25, 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
All of that happened because a, b and c happened, and that led to d, e and f and so on, until basically your life is the whole alphabet.
From "Harbor Me" by Jacqueline Woodson
Sheriff’s deputies following up on the case of a missing person were investigating in the area of East Avenue F and 50th Street East around noon, according to a department statement.
From Los Angeles Times ● Sep. 30, 2026
One of Mackie's early assignments saw him sketch the dress that Marilyn Monroe wore when she delivered her breathy rendition of "Happy Birthday Mr President" to John F Kennedy in 1962.
From BBC ● Sep. 14, 2026
Encoded Therapeutics, a South San Francisco, Calif.-based developer of precision genetic medicines for severe neurological disorders, closed a $275 million Series F round from investors including GV and Venrock.
From The Wall Street Journal ● Sep. 10, 2026
For a time, Trump also had his name placed on the walls of the Kennedy Center, the culture and arts institute named after assassinated president John F Kennedy.
From Barron's ● Sep. 3, 2026
Calder was scratching his chin with the F pentomino.
From "Chasing Vermeer" by Blue Balliett
Some of the most intriguing targets include the TRAPPIST-1 system planets d, e, f, and g, located about 40 light-years from Earth, as well as LHS 1140 b, which lies 48 light-years away.
From Science Daily ● Mar. 25, 2026
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
Was there someone here? f • • • Maester Luwin stepped toward the open sepulchre, torch in hand.
From "A Game of Thrones" by George R.R. Martin
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
Transportation costs, added to the f. o. b. price. also influence the second-hand market.
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
It is quite obvious, that when high-frequency currents are made use of, ground connections are—at least when the e. m. f. of the currents is great—better than a return wire.
From The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting by Thomas Commerford Martin
The loss of both circuits impeded controllers’ ability to communicate with airplanes, prompting the FAA to expand the ground stop to New York’s other two major airports, John F. Kennedy and LaGuardia.
From The Wall Street Journal ● Sep. 22, 2026
Congress in 2019 enacted amendments reiterating that the center’s mission is to serve as a center for the performing arts and as a “national memorial to President John F. Kennedy.”
From The Wall Street Journal ● Sep. 22, 2026
Robert F. Kennedy Jr., secretary of the Department of Health and Human Services, told Congress in April that improving maternal health outcomes is a priority.
From Salon ● Sep. 13, 2026
Robert F. Kennedy described lowered testosterone in young men as a “existential problem.”
From Slate ● Sep. 13, 2026
When the Great Six inspected my library record and found it top-heavy with adventure and science fiction, they prescribed appropriate doses of Steinbeck, Faulkner, and F. Scott Fitzgerald.
From "October Sky" by Homer Hickam
“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
The ruling followed an application from Soldier F's lawyers to have the case dismissed over statements made at the time by Soldier G and Soldier H.
From BBC ● Oct. 16, 2025
In fact, studies show that 66% of students who earn all A's play organized sports compared to just 24% of students with mostly D's and F's.
From Salon ● Jan. 1, 2025
But students didn’t come for help, and they kept getting D’s and F’s.
From Seattle Times ● Aug. 30, 2023
F’s at school because I was absent and absent and absent again.
From "The Tenth Mistake of Hank Hooperman" by Gennifer Choldenko
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
And I got straight Ds and Fs in school.
From Los Angeles Times ● Feb. 15, 2024
When results day came around, Luke got his results - four Fs and an E.
From BBC ● Aug. 17, 2023
Chris left Reed before the final set of exams, leaving him with a row of Fs on his transcript.
From "Outliers" by Malcolm Gladwell
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
It indicates the plurals of letters: How many f’s are there in Fulham?
From "Eats, Shoots & Leaves" by Author
To follow the transformation, the researchers used time-resolved reflectance spectroscopy and ultrashort laser pulses lasting only six fs.
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
Suppose a jet airplane is coming nearly straight at you, emitting a sound of frequency fs .
From Textbooks ● Aug. 12, 2015
Their prices are the following if they are perfect in colour and purity:— One which weighs a carat, which is half a fanam, is worth in Calicut thirty fanoes xxx fs.
From A Description of the Coasts of East Africa and Malabar in the Beginning of the Sixteenth Century by Duarte Barbosa
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.
