a euphemism for the word fuck :
The f-word came into English in the 15th century.
See also , (def 2).
(sometimes capital) the f-word, a euphemistic way of referring to the word (taboo) fuck
the word ‘fuck’
euphemism; often lowercase
Federal Water Pollution Control Act
Fish and Wildlife Service
1. foreign exchange. 1. . 2. fractured. noun 1. (films, informal) short for special effects abbreviation 2. (US & Canadian) foreign exchange noun Visual and other special effects •Best known after the 1986 movie F/X: The FX were tops, the tone tender [1980s+ Movies; fr effects pronounced aFX] networking The country code for metropolitan France. […]