(printing, abbreviation) Folio, paper and book size (10"-12.5" x 15"-20") / (euphemistic) fuck / Alternative form of f.

The ordinal number sixth, derived from this letter of the English alphabet, called ef and written in the Latin script.

Abbreviation of false. / Abbreviation of female. / (philately) Abbreviation of fine.

(euphemistic) Initialism of fuck.

The ordinal number sixth, derived from this letter of the English alphabet, called ef and written in the Latin script.

Abbreviation of various proper names. / Abbreviation of Fahrenheit. / Abbreviation of Father, as a title given to priests. / Abbreviation of French. / Abbreviation of Friday.

A failing grade, with the next best grade being either a D or an E (some institutions issue Es instead of Fs). / (UK) A grade lower than E but higher than G.

Alternative form of F minus

(radiology) functional

Fahrenheit. / French. / (law) Federal, in some legal citation formats.