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An insult rendered in passing against someone who is not present, usually over a breakfast counter.
Person 1: Does DImmortal realize that his user-name sounds like "Dim Mortal"?
Person 2: That's counter-offensive, yo.
by MyRealNameIsMyPseudonym December 29, 2009
A counter-offensive is the term used by the military to describe large scale, usually strategic offensive operations by forces that had successfully halted an enemy's offensive, while occupying defensive positions.
offense,offensive - the action of attacking an enemy.

Counter-offensive - armed force stopping an enemy offensive
by DImmortal April 24, 2009