Initialism of Fianna Fáil, an Irish political party. / (video games) Initialism of Final Fantasy. / (automotive) The Ferrari FF (Ferrari Four), an all-wheel drive grand tourer by Ferrari.

Abbreviation of frigate, a type of warship / Initialism of false flag. / (computing) Initialism of form feed. / Initialism of fill factor. / (vulgar, slang) Initialism of fist-fucking.

Initialism of fast forward.

Initialism of fully finished.

and the following (pages, paragraphs etc.)

(Internet slang, vulgar) Initialism of for fuck's sake.

(Internet slang) Initialism of free for shipping.

Initialism of facial feminization surgery. / (historical) Initialism of Free French Ship.

Often written in old manuscripts or transcriptions of them, denoting a capital F.

Alternative letter-case form of FFS (“for fuck's sake”).