Word for "to say the opposite of what has been said".. it ends with dict.

Napoleon Bonaparte campaigned in Egypt with the intention of dominating the East Mediterranean and threatening the British hold on India. The story of the discovery of the Rosetta Stone most generally accepted is that it was found by accident by soldiers in Napoleon’s army. They discovered the Rosetta Stone on 15 July 1799 while digging the foundations of an addition to a fort near the town of Rashid (Rosetta) in the Nile Delta. It had apparently been built into a very old wall. The officer in charge, Pierre-François Bouchard, realised the importance of the discovery.