f
1 of 4noun
ˈef 
plural f's or fs ˈefs
often capitalized, often attributive
1
a
: the 6th letter of the English alphabet
b
: a graphic representation of this letter
c
: a speech counterpart of orthographic f
2
: the fourth tone of a C-major scale
3
: a graphic device for reproducing the letter f
4
: one designated f especially as the sixth in order or class
5
a
: a grade rating a student's work as failing
b
: one graded or rated with an F
6
: something shaped like the letter F
f
2 of 4abbreviation (1)
1
failure
2
false
3
family
4
faraday
5
feast
6
female
7
feminine
8
femto-
9
fermi
10
fine
11
finish
12
fluid; fluidness
13
focal length
14
folio
15
[following] and the following one
16
force
17
forte
18
fragile
19
frequency
20
from
21
full
F
3 of 4abbreviation (2)
1
Fahrenheit
2
farad
3
French
4
Friday
F
4 of 4symbol
fluorine
Example Sentences
Noun The word “foot” begins with an f. The word “foot” begins with f. I got an F on the test. Abbreviation (2) Water freezes at 32 degrees F.
Recent Examples on the Web
Tiffany Dodson, Harper's BAZAAR, 28 July 2022
Noun
Frost became an f-word in the 2000s, when everyone gravitated towards dewy or cream textures. —Tiffany Dodson, Harper's BAZAAR, 28 July 2022 Word History
First Known Use
Noun
before the 12th century, in the meaning defined at sense 1a
Phrases Containing f
Kids Definition
f
nounˈef
plural f's or fs
often capitalized
1
: the sixth letter of the English alphabet
2
: a musical note referred to by the letter F : the fourth tone of a C-major scale
3
: a grade rating a student's work as failing
Medical Definition
f
1 of 4 abbreviation1
farad
2
father
3
female
4
foot
5
formula
f
2 of 4 symbol1
faraday
2
focal length
3
function
F
3 of 4 abbreviation1
Fahrenheit
2
French
F
4 of 4 symbol fluorine