f-word

/EH1 F W ER0 D/
noun
  1. 1

    The word fuck or fucker, fag or faggot.

    โ€œOh, f-word, I've lost the keys.โ€

  2. 2

    Any word beginning with f that is not normally taboo but is considered (often humorously) to be so in the given context.

    โ€œShe has no luck with diets. Don't mention the f-word (by which I mean "fat").โ€

verb
  1. 1

    To use vulgarities, especially the word fuck.

Source: https://en.wiktionary.org/wiki/f-word