English edit

Noun edit

FU (plural FUs)

  1. Initialism of follow-up.

Adjective edit

FU (not comparable)

  1. (philately) Initialism of fine used. (in stamp descriptions)

Phrase edit

FU

  1. (vulgar) Abbreviation of fuck you.
    • 2021, Isabel Waidner, Sterling Karat Gold, Peninsula Press, page 133:
      Rodney’s English was pretty basic that first year, but, according to Elesin, their face said FU, no translation needed.

Swedish edit

Noun edit

FU

  1. (law) Initialism of förundersökning (preliminary investigation, pre-trial investigation).

See also edit