The opposite of paix is guerre, a French word meaning 'WAR'. Guerre is a six-letter word that is used to describe a state of armed conflict between different nations or states. It is also used to refer to any kind of conflict between two or more parties, such as a civil WAR or a revolution. WAR is a destructive force that can cause immense suffering and loss of life, and it is often seen as the ultimate failure of diplomacy.