f

noun14

1. •
   An academic grade.
2. •
   A failing grade, with the next best grade being either a D or an E (some institutions issue Es instead of Fs).
3. •
   (UK) A grade lower than E but higher than G.
4. •
   Initialism of function (followed by a number when used on or referencing a function key of a computer keyboard).

   • Press F1 for help.
5. •
   (informal, euphemistic) Abbreviation of fuck.

   • What the f do you think you're doing?
6. •
   (euphemistic) Abbreviation of fuck.
7. •
   Initialism of Fujita (followed by a number when used in a rating on the Fujita scale and indicating the intensity of a tornado).
8. •
   Abbreviation of feminine.
9. •
   Abbreviation of fellow.
10. •
    A grade of black-lead pencil (originally an abbreviation of fine).
11. •
    Folio, paper and book size (10"-12.5" x 15"-20")
12. •
    In the American Library Association, a folio-sized book, over 30 cm in height.
13. •
    Abbreviation of fertility factor.
14. •
    Abbreviation of fog, as in a ship's log.

F exclamation1

1. •
   (Internet, humorous) An expression of sympathy or pity; see F in the chat.

F adjective3

1. •
   Abbreviation of female.
2. •
   Abbreviation of false.
3. •
   Abbreviation of fine.

F verb1

1. •
   (informal, euphemistic) Initialism of fuck.

   • "Oh, F you." — 2011

adjective6

1. •
   a short written form of "Fahrenheit", used after a number to show how hot or cold something is
2. •
   [after a noun] and the following (page, paragraph, etc.)
3. •
   Abbreviation of feminine.
4. •
   French.
5. •
   Abbreviation of form; used in certain three-part names.
6. •
   Federal, in some legal citation formats.

F. adverb1

1. •
   And the following (page) - used in indexes.

noun2

1. •
   Abbreviation of figure.
2. •
   Abbreviation of feminine.

noun1

1. •
   An academic grade given by certain institutions. Slightly better than an F and slightly worse than an E−.