New words are added to Webster's and the Oxford Dictionary every year. Usually the words are already in common public usage. Here's a selection coming up:
New word - "MORPHING"
Definition: A vernacular term derived from the word ‘metamorphosing’ and now used to denote anything that changes completely from one thing to another. Sometimes there can be several complete changes.
From: “The reason we are invading Iraq is because they are stocking thousands of Weapons of Mass Destruction";
To: “The reason we have invaded Iraq is to remove a brutal and despotic dictator from power";
To: “The reason we invaded Iraq is to fight a War on Terror”
To: “The reason we have invaded Iraq is to bring Freedom and democracy to that country":
From: “Mission Accomplished!”
To: “Our mission in Iraq may require years of sacrifice” (left unspoken was "sacrifice by others, not me")
From: “I will fire anyone who leaked information about a CIA agent”
To: “I will fire anyone in the White House who committed a crime”
(All above statements made by US President George W. Bush from 2003 until mid-2005)