Last modified on 15 August 2014, at 15:07
See also: fok, fők, and f-ōk




  1. Fill or kill - A type of stock market or financial derivative order, signifying that the order is to be presented for execution, and if not executed ("filled") immediately—is to be cancelled.
  1. Feeling of Knowing - The sense that one has the answer to a question without stating such. Set forth by psychological experiments done by Reder.