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

(stock ticker symbol) Ford Motor Company

(grammar) Abbreviation of feminine.

(Internet slang, Twitch) Used to indicate regret for an unfortunate event.

The sixth letter of the English alphabet, called ef and written in the Latin script.

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

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

And the following (page) - used in indexes.

French.

(music) The name of the fourth tone of the model scale, or scale of C. F sharp (F♯) is a tone intermediate between F and G.