Tmesis. Infix usage (prefix)Tmesing(suffix) is used for emphasis: "unbelievable" becomes "unfuckingbelievable"; "absolutely" becomes "absofuckinglutely"; "incredible" becomes "infuckingcredible"; "fantastic" becomes "fanfuckingtastic," and so on. Additions to the list may be placed here.
absofuckinlutely -- submitted by: Joseph B. Adams
disfuckingusting -- submitted by: creative guy
unfuckingbelievable -- submitted by: pcgruf
The linked site tells quite a bit about forming words. Unfortunately, it's in .ppt (PowerPoint) format. Fine if you have MS Office, but not otherwise. If you click for the HTML version, the screen you see will be mostly blank. Hold the shift key down and highlight the entire article to get it to display. No point in copying and pasting -- nothing pastes. Because of the .ppt format?